398419860 has 24 divisors (see below), whose sum is σ = 1115575776. Its totient is φ = 106245280.

The previous prime is 398419849. The next prime is 398419867. The reversal of 398419860 is 68914893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398419867) 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, 3320106 + ... + 3320225.

It is an arithmetic number, because the mean of its divisors is an integer number (46482324).

Almost surely, 2^398419860 is an apocalyptic number.

398419860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398419860 is an abundant number, since it is smaller than the sum of its proper divisors (717155916).

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

398419860 is a wasteful number, since it uses less digits than its factorization.

398419860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640343 (or 6640341 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 398419860 is about 19960.4574095886. The cubic root of 398419860 is about 735.8348050995.

The spelling of 398419860 in words is "three hundred ninety-eight million, four hundred nineteen thousand, eight hundred sixty".