399751591074 has 32 divisors (see below), whose sum is σ = 872209880064. Its totient is φ = 121133430480.

The previous prime is 399751591073. The next prime is 399751591081. The reversal of 399751591074 is 470195157993.

It is a junction number, because it is equal to n+sod(n) for n = 399751590999 and 399751591017.

It is not an unprimeable number, because it can be changed into a prime (399751591073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3257107 + ... + 3377609.

It is an arithmetic number, because the mean of its divisors is an integer number (27256558752).

Almost surely, 2^399751591074 is an apocalyptic number.

399751591074 is an abundant number, since it is smaller than the sum of its proper divisors (472458288990).

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

399751591074 is a wasteful number, since it uses less digits than its factorization.

399751591074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170782.

The product of its (nonzero) digits is 10716300, while the sum is 60.

The spelling of 399751591074 in words is "three hundred ninety-nine billion, seven hundred fifty-one million, five hundred ninety-one thousand, seventy-four".