398426003915 has 8 divisors (see below), whose sum is σ = 478612901088. Its totient is φ = 318406338880.

The previous prime is 398426003881. The next prime is 398426003923. The reversal of 398426003915 is 519300624893.

It is a happy number.

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

It is not a de Polignac number, because 398426003915 - 2¹⁸ = 398425741771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41802791 + ... + 41812320.

It is an arithmetic number, because the mean of its divisors is an integer number (59826612636).

Almost surely, 2^398426003915 is an apocalyptic number.

398426003915 is a deficient number, since it is larger than the sum of its proper divisors (80186897173).

398426003915 is an equidigital number, since it uses as much as digits as its factorization.

398426003915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83616069.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 398426003915 in words is "three hundred ninety-eight billion, four hundred twenty-six million, three thousand, nine hundred fifteen".