398844057 has 8 divisors (see below), whose sum is σ = 532094560. Its totient is φ = 265744800.

The previous prime is 398844031. The next prime is 398844059. The reversal of 398844057 is 750448893.

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

It is not a de Polignac number, because 398844057 - 2¹⁰ = 398843033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398843997 and 398844015.

It is not an unprimeable number, because it can be changed into a prime (398844059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31507 + ... + 42312.

It is an arithmetic number, because the mean of its divisors is an integer number (66511820).

Almost surely, 2^398844057 is an apocalyptic number.

It is an amenable number.

398844057 is a deficient number, since it is larger than the sum of its proper divisors (133250503).

398844057 is a wasteful number, since it uses less digits than its factorization.

398844057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75623.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 398844057 is about 19971.0805165870. The cubic root of 398844057 is about 736.0958598609.

The spelling of 398844057 in words is "three hundred ninety-eight million, eight hundred forty-four thousand, fifty-seven".