389065957 has 4 divisors (see below), whose sum is σ = 444646816. Its totient is φ = 333485100.

The previous prime is 389065913. The next prime is 389065967. The reversal of 389065957 is 759560983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389065957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389065967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27790419 + ... + 27790432.

It is an arithmetic number, because the mean of its divisors is an integer number (111161704).

Almost surely, 2^389065957 is an apocalyptic number.

It is an amenable number.

389065957 is a deficient number, since it is larger than the sum of its proper divisors (55580859).

389065957 is an equidigital number, since it uses as much as digits as its factorization.

389065957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55580858.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 389065957 is about 19724.7549287691. The cubic root of 389065957 is about 730.0306217217.

The spelling of 389065957 in words is "three hundred eighty-nine million, sixty-five thousand, nine hundred fifty-seven".