91790339 has 2 divisors, whose sum is σ = 91790340. Its totient is φ = 91790338.

The previous prime is 91790297. The next prime is 91790351. The reversal of 91790339 is 93309719.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91790339 - 2¹² = 91786243 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91790296 and 91790305.

It is not a weakly prime, because it can be changed into another prime (91700339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45895169 + 45895170.

It is an arithmetic number, because the mean of its divisors is an integer number (45895170).

Almost surely, 2^91790339 is an apocalyptic number.

91790339 is a deficient number, since it is larger than the sum of its proper divisors (1).

91790339 is an equidigital number, since it uses as much as digits as its factorization.

91790339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 91790339 is about 9580.7274775979. The cubic root of 91790339 is about 451.0925534768.

It can be divided in two parts, 91790 and 339, that added together give a palindrome (92129).

The spelling of 91790339 in words is "ninety-one million, seven hundred ninety thousand, three hundred thirty-nine".