399245766911 has 6 divisors (see below), whose sum is σ = 408746479320. Its totient is φ = 389960979828.

The previous prime is 399245766893. The next prime is 399245766943. The reversal of 399245766911 is 119667542993.

It is not a de Polignac number, because 399245766911 - 2³⁴ = 382065897727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399245766991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107960771 + ... + 107964468.

It is an arithmetic number, because the mean of its divisors is an integer number (68124413220).

Almost surely, 2^399245766911 is an apocalyptic number.

399245766911 is a deficient number, since it is larger than the sum of its proper divisors (9500712409).

399245766911 is an equidigital number, since it uses as much as digits as its factorization.

399245766911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215925325 (or 215925282 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 62.

The spelling of 399245766911 in words is "three hundred ninety-nine billion, two hundred forty-five million, seven hundred sixty-six thousand, nine hundred eleven".