389923901 has 4 divisors (see below), whose sum is σ = 391010400. Its totient is φ = 388837404.

The previous prime is 389923889. The next prime is 389923903. The reversal of 389923901 is 109329983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 389923901 - 2⁶ = 389923837 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 (389923903) 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, 542711 + ... + 543428.

It is an arithmetic number, because the mean of its divisors is an integer number (97752600).

Almost surely, 2^389923901 is an apocalyptic number.

It is an amenable number.

389923901 is a deficient number, since it is larger than the sum of its proper divisors (1086499).

389923901 is a wasteful number, since it uses less digits than its factorization.

389923901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086498.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 389923901 is about 19746.4908528072. The cubic root of 389923901 is about 730.5668337835.

The spelling of 389923901 in words is "three hundred eighty-nine million, nine hundred twenty-three thousand, nine hundred one".