399303994495 has 16 divisors (see below), whose sum is σ = 548815215168. Its totient is φ = 273209299200.

The previous prime is 399303994447. The next prime is 399303994553. The reversal of 399303994495 is 594499303993.

It is not a de Polignac number, because 399303994495 - 2⁷ = 399303994367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399303994495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12466156 + ... + 12498145.

It is an arithmetic number, because the mean of its divisors is an integer number (34300950948).

Almost surely, 2^399303994495 is an apocalyptic number.

399303994495 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

399303994495 is a deficient number, since it is larger than the sum of its proper divisors (149511220673).

399303994495 is a wasteful number, since it uses less digits than its factorization.

399303994495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24964770.

The product of its (nonzero) digits is 127545840, while the sum is 67.

The spelling of 399303994495 in words is "three hundred ninety-nine billion, three hundred three million, nine hundred ninety-four thousand, four hundred ninety-five".