399875428774 has 8 divisors (see below), whose sum is σ = 599884009848. Its totient is φ = 199914092160.

The previous prime is 399875428769. The next prime is 399875428801. The reversal of 399875428774 is 477824578993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 399875428697 and 399875428706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11789947 + ... + 11823814.

It is an arithmetic number, because the mean of its divisors is an integer number (74985501231).

Almost surely, 2^399875428774 is an apocalyptic number.

399875428774 is a deficient number, since it is larger than the sum of its proper divisors (200008581074).

399875428774 is a wasteful number, since it uses less digits than its factorization.

399875428774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23622230.

The product of its digits is 853493760, while the sum is 73.

The spelling of 399875428774 in words is "three hundred ninety-nine billion, eight hundred seventy-five million, four hundred twenty-eight thousand, seven hundred seventy-four".