3939620723 has 2 divisors, whose sum is σ = 3939620724. Its totient is φ = 3939620722.

The previous prime is 3939620677. The next prime is 3939620777. The reversal of 3939620723 is 3270269393.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3939620723 - 2²⁶ = 3872511859 is a prime.

It is a super-2 number, since 2×3939620723² = 31041222882182085458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3939620023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969810361 + 1969810362.

It is an arithmetic number, because the mean of its divisors is an integer number (1969810362).

Almost surely, 2^3939620723 is an apocalyptic number.

3939620723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939620723 is an equidigital number, since it uses as much as digits as its factorization.

3939620723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 44.

The square root of 3939620723 is about 62766.3980406714. The cubic root of 3939620723 is about 1579.3733458674.

The spelling of 3939620723 in words is "three billion, nine hundred thirty-nine million, six hundred twenty thousand, seven hundred twenty-three".