399440653014442 has 64 divisors (see below), whose sum is σ = 686676498923520. Its totient is φ = 172744930381824.

The previous prime is 399440653014437. The next prime is 399440653014443. The reversal of 399440653014442 is 244410356044993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (399440653014443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4385623 + ... + 28602709.

It is an arithmetic number, because the mean of its divisors is an integer number (10729320295680).

Almost surely, 2^{399440653014442} is an apocalyptic number.

399440653014442 is a deficient number, since it is larger than the sum of its proper divisors (287235845909078).

399440653014442 is a wasteful number, since it uses less digits than its factorization.

399440653014442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24217487.

The product of its (nonzero) digits is 44789760, while the sum is 58.

The spelling of 399440653014442 in words is "three hundred ninety-nine trillion, four hundred forty billion, six hundred fifty-three million, fourteen thousand, four hundred forty-two".