398459793 has 4 divisors (see below), whose sum is σ = 531279728. Its totient is φ = 265639860.

The previous prime is 398459779. The next prime is 398459813. The reversal of 398459793 is 397954893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 398459793 - 2²⁵ = 364905361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398459293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66409963 + ... + 66409968.

It is an arithmetic number, because the mean of its divisors is an integer number (132819932).

Almost surely, 2^398459793 is an apocalyptic number.

It is an amenable number.

398459793 is a deficient number, since it is larger than the sum of its proper divisors (132819935).

398459793 is a wasteful number, since it uses less digits than its factorization.

398459793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132819934.

The product of its digits is 7348320, while the sum is 57.

The square root of 398459793 is about 19961.4576872532. The cubic root of 398459793 is about 735.8593881358.

The spelling of 398459793 in words is "three hundred ninety-eight million, four hundred fifty-nine thousand, seven hundred ninety-three".