398877550 has 12 divisors (see below), whose sum is σ = 741912336. Its totient is φ = 159551000.

The previous prime is 398877529. The next prime is 398877551. The reversal of 398877550 is 55778893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398877551) 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 5 ways as a sum of consecutive naturals, for example, 3988726 + ... + 3988825.

It is an arithmetic number, because the mean of its divisors is an integer number (61826028).

Almost surely, 2^398877550 is an apocalyptic number.

398877550 is a deficient number, since it is larger than the sum of its proper divisors (343034786).

398877550 is a wasteful number, since it uses less digits than its factorization.

398877550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7977563 (or 7977558 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The square root of 398877550 is about 19971.9190364872. The cubic root of 398877550 is about 736.1164638773.

The spelling of 398877550 in words is "three hundred ninety-eight million, eight hundred seventy-seven thousand, five hundred fifty".