389074487 has 4 divisors (see below), whose sum is σ = 389161920. Its totient is φ = 388987056.

The previous prime is 389074471. The next prime is 389074501. The reversal of 389074487 is 784470983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784470983 = 1181 ⋅664243.

It is a cyclic number.

It is not a de Polignac number, because 389074487 - 2⁴ = 389074471 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 (389074687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36662 + ... + 46067.

It is an arithmetic number, because the mean of its divisors is an integer number (97290480).

Almost surely, 2^389074487 is an apocalyptic number.

389074487 is a deficient number, since it is larger than the sum of its proper divisors (87433).

389074487 is an equidigital number, since it uses as much as digits as its factorization.

389074487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87432.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The square root of 389074487 is about 19724.9711533376. The cubic root of 389074487 is about 730.0359568202.

The spelling of 389074487 in words is "three hundred eighty-nine million, seventy-four thousand, four hundred eighty-seven".