91958429 has 2 divisors, whose sum is σ = 91958430. Its totient is φ = 91958428.

The previous prime is 91958413. The next prime is 91958441. The reversal of 91958429 is 92485919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48372025 + 43586404 = 6955^2 + 6602^2 .

It is a cyclic number.

It is not a de Polignac number, because 91958429 - 2⁴ = 91958413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91958329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45979214 + 45979215.

It is an arithmetic number, because the mean of its divisors is an integer number (45979215).

Almost surely, 2^91958429 is an apocalyptic number.

It is an amenable number.

91958429 is a deficient number, since it is larger than the sum of its proper divisors (1).

91958429 is an equidigital number, since it uses as much as digits as its factorization.

91958429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 47.

The square root of 91958429 is about 9589.4957635947. The cubic root of 91958429 is about 451.3677382480.

The spelling of 91958429 in words is "ninety-one million, nine hundred fifty-eight thousand, four hundred twenty-nine".