398416930 has 32 divisors (see below), whose sum is σ = 777009024. Its totient is φ = 146501376.

The previous prime is 398416919. The next prime is 398416933. The reversal of 398416930 is 39614893.

It is a super-2 number, since 2×398416930² = 317472100221249800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (398416933) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19942 + ... + 34561.

It is an arithmetic number, because the mean of its divisors is an integer number (24281532).

Almost surely, 2^398416930 is an apocalyptic number.

398416930 is a deficient number, since it is larger than the sum of its proper divisors (378592094).

398416930 is a wasteful number, since it uses less digits than its factorization.

398416930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54570.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 398416930 is about 19960.3840143420. The cubic root of 398416930 is about 735.8330013062.

The spelling of 398416930 in words is "three hundred ninety-eight million, four hundred sixteen thousand, nine hundred thirty".