389006091 has 16 divisors (see below), whose sum is σ = 577573920. Its totient is φ = 258766560.

The previous prime is 389006083. The next prime is 389006113. The reversal of 389006091 is 190600983.

It is not a de Polignac number, because 389006091 - 2³ = 389006083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389006081) 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, 3180 + ... + 28073.

It is an arithmetic number, because the mean of its divisors is an integer number (36098370).

Almost surely, 2^389006091 is an apocalyptic number.

389006091 is a deficient number, since it is larger than the sum of its proper divisors (188567829).

389006091 is a wasteful number, since it uses less digits than its factorization.

389006091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31723 (or 31717 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 389006091 is about 19723.2373356911. The cubic root of 389006091 is about 729.9931762670.

It can be divided in two parts, 38900609 and 1, that added together give a triangular number (38900610 = T₈₈₂₀).

The spelling of 389006091 in words is "three hundred eighty-nine million, six thousand, ninety-one".