91792919 has 2 divisors, whose sum is σ = 91792920. Its totient is φ = 91792918.

The previous prime is 91792889. The next prime is 91792949. The reversal of 91792919 is 91929719.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (91792889) and next prime (91792949).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91792919 is a prime.

It is a super-2 number, since 2×91792919² = 16851879957081122, 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 (91792949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45896459 + 45896460.

It is an arithmetic number, because the mean of its divisors is an integer number (45896460).

Almost surely, 2^91792919 is an apocalyptic number.

91792919 is a deficient number, since it is larger than the sum of its proper divisors (1).

91792919 is an equidigital number, since it uses as much as digits as its factorization.

91792919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 47.

The square root of 91792919 is about 9580.8621219596. The cubic root of 91792919 is about 451.0967798035.

The spelling of 91792919 in words is "ninety-one million, seven hundred ninety-two thousand, nine hundred nineteen".