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91199041 = 206344207
BaseRepresentation
bin1010110111110…
…01011001000001
320100121101120021
411123321121001
5141321332131
613014413441
72155115263
oct533713101
9210541507
1091199041
114753020a
1226661281
1315b8193b
14c17db33
158016e11
hex56f9641

91199041 has 4 divisors (see below), whose sum is σ = 91245312. Its totient is φ = 91152772.

The previous prime is 91199039. The next prime is 91199051. The reversal of 91199041 is 14099119.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 91199041 - 21 = 91199039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91198988 and 91199006.

It is not an unprimeable number, because it can be changed into a prime (91199051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20041 + ... + 24166.

It is an arithmetic number, because the mean of its divisors is an integer number (22811328).

Almost surely, 291199041 is an apocalyptic number.

It is an amenable number.

91199041 is a deficient number, since it is larger than the sum of its proper divisors (46271).

91199041 is a wasteful number, since it uses less digits than its factorization.

91199041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46270.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 91199041 is about 9549.8188988064. The cubic root of 91199041 is about 450.1218451947.

The spelling of 91199041 in words is "ninety-one million, one hundred ninety-nine thousand, forty-one".

Divisors: 1 2063 44207 91199041