398923733842 has 8 divisors (see below), whose sum is σ = 598755207600. Its totient is φ = 199338664644.

The previous prime is 398923733797. The next prime is 398923733849. The reversal of 398923733842 is 248337329893.

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

It is not an unprimeable number, because it can be changed into a prime (398923733849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61597092 + ... + 61603567.

It is an arithmetic number, because the mean of its divisors is an integer number (74844400950).

Almost surely, 2^398923733842 is an apocalyptic number.

398923733842 is a deficient number, since it is larger than the sum of its proper divisors (199831473758).

398923733842 is a wasteful number, since it uses less digits than its factorization.

398923733842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123202280.

The product of its digits is 47029248, while the sum is 61.

The spelling of 398923733842 in words is "three hundred ninety-eight billion, nine hundred twenty-three million, seven hundred thirty-three thousand, eight hundred forty-two".