398456146 has 48 divisors (see below), whose sum is σ = 684291168. Its totient is φ = 173906040.

The previous prime is 398456129. The next prime is 398456147. The reversal of 398456146 is 641654893.

It is a junction number, because it is equal to n+sod(n) for n = 398456096 and 398456105.

It is not an unprimeable number, because it can be changed into a prime (398456147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6753465 + ... + 6753523.

It is an arithmetic number, because the mean of its divisors is an integer number (14256066).

Almost surely, 2^398456146 is an apocalyptic number.

398456146 is a deficient number, since it is larger than the sum of its proper divisors (285835022).

398456146 is an equidigital number, since it uses as much as digits as its factorization.

398456146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 115 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 398456146 is about 19961.3663360001. The cubic root of 398456146 is about 735.8571430851.

The spelling of 398456146 in words is "three hundred ninety-eight million, four hundred fifty-six thousand, one hundred forty-six".