398305038 has 16 divisors (see below), whose sum is σ = 799918416. Its totient is φ = 132216960.

The previous prime is 398305027. The next prime is 398305043. The reversal of 398305038 is 830503893.

It is a junction number, because it is equal to n+sod(n) for n = 398304987 and 398305005.

It is a congruent 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, 136281 + ... + 139172.

It is an arithmetic number, because the mean of its divisors is an integer number (49994901).

Almost surely, 2^398305038 is an apocalyptic number.

398305038 is an abundant number, since it is smaller than the sum of its proper divisors (401613378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398305038 is a wasteful number, since it uses less digits than its factorization.

398305038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275699.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 398305038 is about 19957.5809656381. The cubic root of 398305038 is about 735.7641107138.

The spelling of 398305038 in words is "three hundred ninety-eight million, three hundred five thousand, thirty-eight".