398249070 has 16 divisors (see below), whose sum is σ = 955797840. Its totient is φ = 106199744.

The previous prime is 398249069. The next prime is 398249077. The reversal of 398249070 is 70942893.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398249077) 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, 6637455 + ... + 6637514.

It is an arithmetic number, because the mean of its divisors is an integer number (59737365).

Almost surely, 2^398249070 is an apocalyptic number.

398249070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398249070 is an abundant number, since it is smaller than the sum of its proper divisors (557548770).

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

398249070 is a wasteful number, since it uses less digits than its factorization.

398249070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13274979.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 398249070 is about 19956.1787424346. The cubic root of 398249070 is about 735.7296470317.

The spelling of 398249070 in words is "three hundred ninety-eight million, two hundred forty-nine thousand, seventy".