389952031 has 4 divisors (see below), whose sum is σ = 445659472. Its totient is φ = 334244592.

The previous prime is 389952019. The next prime is 389952041. The reversal of 389952031 is 130259983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389952031 - 2²¹ = 387854879 is a prime.

It is a super-2 number, since 2×389952031² = 304125172962049922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389952041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27853710 + ... + 27853723.

It is an arithmetic number, because the mean of its divisors is an integer number (111414868).

Almost surely, 2^389952031 is an apocalyptic number.

389952031 is a deficient number, since it is larger than the sum of its proper divisors (55707441).

389952031 is an equidigital number, since it uses as much as digits as its factorization.

389952031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55707440.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 389952031 is about 19747.2031184165. The cubic root of 389952031 is about 730.5844016139.

The spelling of 389952031 in words is "three hundred eighty-nine million, nine hundred fifty-two thousand, thirty-one".