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91149 = 3231321
BaseRepresentation
bin10110010000001101
311122000220
4112100031
510404044
61541553
7526512
oct262015
9148026
1091149
1162533
12448b9
1332646
1425309
151c019
hex1640d

91149 has 8 divisors (see below), whose sum is σ = 126912. Its totient is φ = 58080.

The previous prime is 91141. The next prime is 91151. The reversal of 91149 is 94119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91149 - 23 = 91141 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91149.

It is not an unprimeable number, because it can be changed into a prime (91141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592 + ... + 729.

It is an arithmetic number, because the mean of its divisors is an integer number (15864).

291149 is an apocalyptic number.

It is an amenable number.

91149 is a deficient number, since it is larger than the sum of its proper divisors (35763).

91149 is a wasteful number, since it uses less digits than its factorization.

91149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its digits is 324, while the sum is 24.

The square root of 91149 is about 301.9089266650. The cubic root of 91149 is about 45.0039502705.

Subtracting from 91149 its sum of digits (24), we obtain a cube (91125 = 453).

The spelling of 91149 in words is "ninety-one thousand, one hundred forty-nine".

Divisors: 1 3 23 69 1321 3963 30383 91149