398709079 has 8 divisors (see below), whose sum is σ = 405810000. Its totient is φ = 391619712.

The previous prime is 398709067. The next prime is 398709083. The reversal of 398709079 is 970907893.

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

It is a cyclic number.

It is not a de Polignac number, because 398709079 - 2²³ = 390320471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 96447 + ... + 100495.

It is an arithmetic number, because the mean of its divisors is an integer number (50726250).

Almost surely, 2^398709079 is an apocalyptic number.

398709079 is a deficient number, since it is larger than the sum of its proper divisors (7100921).

398709079 is a wasteful number, since it uses less digits than its factorization.

398709079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 398709079 is about 19967.7008941941. The cubic root of 398709079 is about 736.0128132369.

The spelling of 398709079 in words is "three hundred ninety-eight million, seven hundred nine thousand, seventy-nine".