389038557 has 16 divisors (see below), whose sum is σ = 549642240. Its totient is φ = 243919872.

The previous prime is 389038543. The next prime is 389038577. The reversal of 389038557 is 755830983.

It is a happy number.

It is not a de Polignac number, because 389038557 - 2¹⁰ = 389037533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389038577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106788 + ... + 110370.

It is an arithmetic number, because the mean of its divisors is an integer number (34352640).

Almost surely, 2^389038557 is an apocalyptic number.

It is an amenable number.

389038557 is a deficient number, since it is larger than the sum of its proper divisors (160603683).

389038557 is a wasteful number, since it uses less digits than its factorization.

389038557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 389038557 is about 19724.0603578472. The cubic root of 389038557 is about 730.0134838318.

The spelling of 389038557 in words is "three hundred eighty-nine million, thirty-eight thousand, five hundred fifty-seven".