398055950 has 12 divisors (see below), whose sum is σ = 740384160. Its totient is φ = 159222360.

The previous prime is 398055941. The next prime is 398055991. The reversal of 398055950 is 59550893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 3980510 + ... + 3980609.

It is an arithmetic number, because the mean of its divisors is an integer number (61698680).

Almost surely, 2^398055950 is an apocalyptic number.

398055950 is a deficient number, since it is larger than the sum of its proper divisors (342328210).

398055950 is a wasteful number, since it uses less digits than its factorization.

398055950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961131 (or 7961126 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 398055950 is about 19951.3395540249. The cubic root of 398055950 is about 735.6107038100.

The spelling of 398055950 in words is "three hundred ninety-eight million, fifty-five thousand, nine hundred fifty".