398663075 has 12 divisors (see below), whose sum is σ = 496527000. Its totient is φ = 317520960.

The previous prime is 398663063. The next prime is 398663077. The reversal of 398663075 is 570366893.

It is not a de Polignac number, because 398663075 - 2⁶ = 398663011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398663077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29450 + ... + 40799.

It is an arithmetic number, because the mean of its divisors is an integer number (41377250).

Almost surely, 2^398663075 is an apocalyptic number.

398663075 is a deficient number, since it is larger than the sum of its proper divisors (97863925).

398663075 is a wasteful number, since it uses less digits than its factorization.

398663075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70486 (or 70481 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 398663075 is about 19966.5489005987. The cubic root of 398663075 is about 735.9845045129.

The spelling of 398663075 in words is "three hundred ninety-eight million, six hundred sixty-three thousand, seventy-five".