7936891 has 2 divisors, whose sum is σ = 7936892. Its totient is φ = 7936890.

The previous prime is 7936879. The next prime is 7936913. The reversal of 7936891 is 1986397.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7936891 - 2⁷ = 7936763 is a prime.

It is not a weakly prime, because it can be changed into another prime (7936801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3968445 + 3968446.

It is an arithmetic number, because the mean of its divisors is an integer number (3968446).

Almost surely, 2^7936891 is an apocalyptic number.

7936891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7936891 is an equidigital number, since it uses as much as digits as its factorization.

7936891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 7936891 is about 2817.2488353001. The cubic root of 7936891 is about 199.4727026761.

The spelling of 7936891 in words is "seven million, nine hundred thirty-six thousand, eight hundred ninety-one".