3923991307 has 2 divisors, whose sum is σ = 3923991308. Its totient is φ = 3923991306.

The previous prime is 3923991301. The next prime is 3923991329. The reversal of 3923991307 is 7031993293.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3923991307 - 2²⁷ = 3789773579 is a prime.

It is not a weakly prime, because it can be changed into another prime (3923991301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961995653 + 1961995654.

It is an arithmetic number, because the mean of its divisors is an integer number (1961995654).

Almost surely, 2^3923991307 is an apocalyptic number.

3923991307 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923991307 is an equidigital number, since it uses as much as digits as its factorization.

3923991307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 46.

The square root of 3923991307 is about 62641.7696668924. The cubic root of 3923991307 is about 1577.2819940799.

The spelling of 3923991307 in words is "three billion, nine hundred twenty-three million, nine hundred ninety-one thousand, three hundred seven".