389240347 has 16 divisors (see below), whose sum is σ = 427593600. Its totient is φ = 352834560.

The previous prime is 389240317. The next prime is 389240353. The reversal of 389240347 is 743042983.

It is a cyclic number.

It is not a de Polignac number, because 389240347 - 2²⁷ = 255022619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389240317) 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, 51529 + ... + 58597.

It is an arithmetic number, because the mean of its divisors is an integer number (26724600).

Almost surely, 2^389240347 is an apocalyptic number.

389240347 is a deficient number, since it is larger than the sum of its proper divisors (38353253).

389240347 is a wasteful number, since it uses less digits than its factorization.

389240347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 389240347 is about 19729.1750207656. The cubic root of 389240347 is about 730.1396786577.

The spelling of 389240347 in words is "three hundred eighty-nine million, two hundred forty thousand, three hundred forty-seven".