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91406741 = 464319687
BaseRepresentation
bin1010111001011…
…00000110010101
320100222221110212
411130230012111
5141400003431
613023055205
72156641646
oct534540625
9210887425
1091406741
1147662268
1226741505
1315c2533a
14c1d56cd
15805872b
hex572c195

91406741 has 4 divisors (see below), whose sum is σ = 91431072. Its totient is φ = 91382412.

The previous prime is 91406683. The next prime is 91406743. The reversal of 91406741 is 14760419.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14760419 = 60724317.

It is a cyclic number.

It is not a de Polignac number, because 91406741 - 214 = 91390357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91406698 and 91406707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91406743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5201 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (22857768).

Almost surely, 291406741 is an apocalyptic number.

It is an amenable number.

91406741 is a deficient number, since it is larger than the sum of its proper divisors (24331).

91406741 is a wasteful number, since it uses less digits than its factorization.

91406741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24330.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 91406741 is about 9560.6872660913. The cubic root of 91406741 is about 450.4632940489.

The spelling of 91406741 in words is "ninety-one million, four hundred six thousand, seven hundred forty-one".

Divisors: 1 4643 19687 91406741