389907393 has 16 divisors (see below), whose sum is σ = 552758976. Its totient is φ = 243624960.

The previous prime is 389907391. The next prime is 389907403. The reversal of 389907393 is 393709983.

It is a happy number.

It is not a de Polignac number, because 389907393 - 2¹ = 389907391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (389907391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3571 + ... + 28152.

It is an arithmetic number, because the mean of its divisors is an integer number (34547436).

Almost surely, 2^389907393 is an apocalyptic number.

It is an amenable number.

389907393 is a deficient number, since it is larger than the sum of its proper divisors (162851583).

389907393 is a wasteful number, since it uses less digits than its factorization.

389907393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31984.

The product of its (nonzero) digits is 1102248, while the sum is 51.

The square root of 389907393 is about 19746.0728500631. The cubic root of 389907393 is about 730.5565237654.

The spelling of 389907393 in words is "three hundred eighty-nine million, nine hundred seven thousand, three hundred ninety-three".