399246901967 has 2 divisors, whose sum is σ = 399246901968. Its totient is φ = 399246901966.

The previous prime is 399246901877. The next prime is 399246901973. The reversal of 399246901967 is 769109642993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399246901967 - 2¹⁶ = 399246836431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399246901567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199623450983 + 199623450984.

It is an arithmetic number, because the mean of its divisors is an integer number (199623450984).

Almost surely, 2^399246901967 is an apocalyptic number.

399246901967 is a deficient number, since it is larger than the sum of its proper divisors (1).

399246901967 is an equidigital number, since it uses as much as digits as its factorization.

399246901967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39680928, while the sum is 65.

The spelling of 399246901967 in words is "three hundred ninety-nine billion, two hundred forty-six million, nine hundred one thousand, nine hundred sixty-seven".