389657409 has 8 divisors (see below), whose sum is σ = 519811872. Its totient is φ = 259637280.

The previous prime is 389657407. The next prime is 389657419. The reversal of 389657409 is 904756983.

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

It is not a de Polignac number, because 389657409 - 2¹ = 389657407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389657407) 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, 26607 + ... + 38564.

It is an arithmetic number, because the mean of its divisors is an integer number (64976484).

Almost surely, 2^389657409 is an apocalyptic number.

It is an amenable number.

389657409 is a deficient number, since it is larger than the sum of its proper divisors (130154463).

389657409 is a wasteful number, since it uses less digits than its factorization.

389657409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67167.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 389657409 is about 19739.7418676132. The cubic root of 389657409 is about 730.4003614826.

The spelling of 389657409 in words is "three hundred eighty-nine million, six hundred fifty-seven thousand, four hundred nine".