398444464 has 40 divisors (see below), whose sum is σ = 856463040. Its totient is φ = 178036800.

The previous prime is 398444461. The next prime is 398444467. The reversal of 398444464 is 464444893.

It is an interprime number because it is at equal distance from previous prime (398444461) and next prime (398444467).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (398444461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8802 + ... + 29569.

It is an arithmetic number, because the mean of its divisors is an integer number (21411576).

Almost surely, 2^398444464 is an apocalyptic number.

It is an amenable number.

398444464 is an abundant number, since it is smaller than the sum of its proper divisors (458018576).

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

398444464 is a wasteful number, since it uses less digits than its factorization.

398444464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38449 (or 38443 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 46.

The square root of 398444464 is about 19961.0737186154. The cubic root of 398444464 is about 735.8499516896.

The spelling of 398444464 in words is "three hundred ninety-eight million, four hundred forty-four thousand, four hundred sixty-four".