389142551 has 8 divisors (see below), whose sum is σ = 450998784. Its totient is φ = 328852440.

The previous prime is 389142539. The next prime is 389142557. The reversal of 389142551 is 155241983.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389142551 - 2²⁶ = 322033687 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 (389142557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390995 + ... + 391988.

It is an arithmetic number, because the mean of its divisors is an integer number (56374848).

Almost surely, 2^389142551 is an apocalyptic number.

389142551 is a deficient number, since it is larger than the sum of its proper divisors (61856233).

389142551 is an equidigital number, since it uses as much as digits as its factorization.

389142551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783061.

The product of its digits is 43200, while the sum is 38.

The square root of 389142551 is about 19726.6964036049. The cubic root of 389142551 is about 730.0785247361.

The spelling of 389142551 in words is "three hundred eighty-nine million, one hundred forty-two thousand, five hundred fifty-one".