389577145 has 8 divisors (see below), whose sum is σ = 467618760. Its totient is φ = 311577600.

The previous prime is 389577137. The next prime is 389577163. The reversal of 389577145 is 541775983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 152078224 + 237498921 = 12332^2 + 15411^2 .

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

It is not a de Polignac number, because 389577145 - 2³ = 389577137 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15891 + ... + 32119.

It is an arithmetic number, because the mean of its divisors is an integer number (58452345).

Almost surely, 2^389577145 is an apocalyptic number.

It is an amenable number.

389577145 is a deficient number, since it is larger than the sum of its proper divisors (78041615).

389577145 is a wasteful number, since it uses less digits than its factorization.

389577145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21035.

The product of its digits is 1058400, while the sum is 49.

The square root of 389577145 is about 19737.7087069396. The cubic root of 389577145 is about 730.3502072710.

The spelling of 389577145 in words is "three hundred eighty-nine million, five hundred seventy-seven thousand, one hundred forty-five".