91916951 has 8 divisors (see below), whose sum is σ = 105139104. Its totient is φ = 78717600.

The previous prime is 91916941. The next prime is 91916963. The reversal of 91916951 is 15961919.

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

It is a cyclic number.

It is not a de Polignac number, because 91916951 - 2¹⁰ = 91915927 is a prime.

It is a super-2 number, since 2×91916951² = 16897451762272802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91916899 and 91916908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91916911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4061 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (13142388).

Almost surely, 2^91916951 is an apocalyptic number.

91916951 is a deficient number, since it is larger than the sum of its proper divisors (13222153).

91916951 is a wasteful number, since it uses less digits than its factorization.

91916951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11401.

The product of its digits is 21870, while the sum is 41.

The square root of 91916951 is about 9587.3328407853. The cubic root of 91916951 is about 451.2998646563.

The spelling of 91916951 in words is "ninety-one million, nine hundred sixteen thousand, nine hundred fifty-one".