399709190466 has 48 divisors (see below), whose sum is σ = 911674015200. Its totient is φ = 126216123264.

The previous prime is 399709190453. The next prime is 399709190473. The reversal of 399709190466 is 664091907993.

399709190466 is a `hidden beast` number, since 3 + 99 + 70 + 9 + 19 + 0 + 466 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8245050 + ... + 8293386.

It is an arithmetic number, because the mean of its divisors is an integer number (18993208650).

Almost surely, 2^399709190466 is an apocalyptic number.

399709190466 is an abundant number, since it is smaller than the sum of its proper divisors (511964824734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399709190466 is a wasteful number, since it uses less digits than its factorization.

399709190466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72543 (or 72540 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 63.

The spelling of 399709190466 in words is "three hundred ninety-nine billion, seven hundred nine million, one hundred ninety thousand, four hundred sixty-six".