389924655 has 24 divisors (see below), whose sum is σ = 628825392. Its totient is φ = 206318592.

The previous prime is 389924641. The next prime is 389924663. The reversal of 389924655 is 556429983.

It is not a de Polignac number, because 389924655 - 2¹³ = 389916463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389924598 and 389924607.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1062282 + ... + 1062648.

It is an arithmetic number, because the mean of its divisors is an integer number (26201058).

Almost surely, 2^389924655 is an apocalyptic number.

389924655 is a deficient number, since it is larger than the sum of its proper divisors (238900737).

389924655 is an equidigital number, since it uses as much as digits as its factorization.

389924655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 568 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The square root of 389924655 is about 19746.5099447978. The cubic root of 389924655 is about 730.5673046848.

The spelling of 389924655 in words is "three hundred eighty-nine million, nine hundred twenty-four thousand, six hundred fifty-five".