398861850 has 48 divisors (see below), whose sum is σ = 1015926048. Its totient is φ = 103487040.

The previous prime is 398861849. The next prime is 398861861. The reversal of 398861850 is 58168893.

It is a self number, because there is not a number n which added to its sum of digits gives 398861850.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30384 + ... + 41483.

It is an arithmetic number, because the mean of its divisors is an integer number (21165126).

Almost surely, 2^398861850 is an apocalyptic number.

398861850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398861850 is an abundant number, since it is smaller than the sum of its proper divisors (617064198).

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

398861850 is a wasteful number, since it uses less digits than its factorization.

398861850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71919 (or 71914 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 398861850 is about 19971.5259807557. The cubic root of 398861850 is about 736.1068057921.

The spelling of 398861850 in words is "three hundred ninety-eight million, eight hundred sixty-one thousand, eight hundred fifty".