7912291 has 2 divisors, whose sum is σ = 7912292. Its totient is φ = 7912290.

The previous prime is 7912283. The next prime is 7912319. The reversal of 7912291 is 1922197.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7912291 - 2³ = 7912283 is a prime.

It is not a weakly prime, because it can be changed into another prime (7912991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3956145 + 3956146.

It is an arithmetic number, because the mean of its divisors is an integer number (3956146).

Almost surely, 2^7912291 is an apocalyptic number.

7912291 is a deficient number, since it is larger than the sum of its proper divisors (1).

7912291 is an equidigital number, since it uses as much as digits as its factorization.

7912291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 31.

The square root of 7912291 is about 2812.8794855095. The cubic root of 7912291 is about 199.2664041422.

It can be divided in two parts, 791 and 2291, that multiplied together give a palindrome (1812181).

The spelling of 7912291 in words is "seven million, nine hundred twelve thousand, two hundred ninety-one".