389946555 has 60 divisors (see below), whose sum is σ = 712711296. Its totient is φ = 203968800.

The previous prime is 389946553. The next prime is 389946563. The reversal of 389946555 is 555649983.

It is a happy number.

389946555 is a `hidden beast` number, since 3 + 89 + 9 + 4 + 6 + 555 = 666.

It is not a de Polignac number, because 389946555 - 2¹ = 389946553 is a prime.

Its product of digits (5832000) is a multiple of the sum of its prime divisors (270).

It is not an unprimeable number, because it can be changed into a prime (389946553) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2041510 + ... + 2041700.

Almost surely, 2^389946555 is an apocalyptic number.

389946555 is a deficient number, since it is larger than the sum of its proper divisors (322764741).

389946555 is an equidigital number, since it uses as much as digits as its factorization.

389946555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 270 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The square root of 389946555 is about 19747.0644653832. The cubic root of 389946555 is about 730.5809817925.

The spelling of 389946555 in words is "three hundred eighty-nine million, nine hundred forty-six thousand, five hundred fifty-five".