91950993 has 12 divisors (see below), whose sum is σ = 133031808. Its totient is φ = 61202040.

The previous prime is 91950979. The next prime is 91951003. The reversal of 91950993 is 39905919.

It is not a de Polignac number, because 91950993 - 2⁵ = 91950961 is a prime.

It is a super-2 number, since 2×91950993² = 16909970227372098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91950913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2073 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (11085984).

Almost surely, 2^91950993 is an apocalyptic number.

It is an amenable number.

91950993 is a deficient number, since it is larger than the sum of its proper divisors (41080815).

91950993 is a wasteful number, since it uses less digits than its factorization.

91950993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16444 (or 16441 counting only the distinct ones).

The product of its (nonzero) digits is 98415, while the sum is 45.

The square root of 91950993 is about 9589.1080398544. The cubic root of 91950993 is about 451.3555716600.

The spelling of 91950993 in words is "ninety-one million, nine hundred fifty thousand, nine hundred ninety-three".