91955933 has 2 divisors, whose sum is σ = 91955934. Its totient is φ = 91955932.

The previous prime is 91955911. The next prime is 91955939. The reversal of 91955933 is 33955919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53553124 + 38402809 = 7318^2 + 6197^2 .

It is a cyclic number.

It is not a de Polignac number, because 91955933 - 2⁶ = 91955869 is a prime.

It is a super-2 number, since 2×91955933² = 16911787227800978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91955939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45977966 + 45977967.

It is an arithmetic number, because the mean of its divisors is an integer number (45977967).

Almost surely, 2^91955933 is an apocalyptic number.

It is an amenable number.

91955933 is a deficient number, since it is larger than the sum of its proper divisors (1).

91955933 is an equidigital number, since it uses as much as digits as its factorization.

91955933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164025, while the sum is 44.

The square root of 91955933 is about 9589.3656203109. The cubic root of 91955933 is about 451.3636544315.

The spelling of 91955933 in words is "ninety-one million, nine hundred fifty-five thousand, nine hundred thirty-three".