398822915 has 8 divisors (see below), whose sum is σ = 478772160. Its totient is φ = 318935232.

The previous prime is 398822909. The next prime is 398822923. The reversal of 398822915 is 519228893.

398822915 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 398822915 - 2⁴ = 398822899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398822915.

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, 326 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (59846520).

Almost surely, 2^398822915 is an apocalyptic number.

398822915 is a deficient number, since it is larger than the sum of its proper divisors (79949245).

398822915 is a wasteful number, since it uses less digits than its factorization.

398822915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30781.

The product of its digits is 311040, while the sum is 47.

The square root of 398822915 is about 19970.5511941959. The cubic root of 398822915 is about 736.0828532623.

The spelling of 398822915 in words is "three hundred ninety-eight million, eight hundred twenty-two thousand, nine hundred fifteen".