389140424 has 8 divisors (see below), whose sum is σ = 729638310. Its totient is φ = 194570208.

The previous prime is 389140393. The next prime is 389140457. The reversal of 389140424 is 424041983.

It can be written as a sum of positive squares in only one way, i.e., 317196100 + 71944324 = 17810^2 + 8482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24321269 + ... + 24321284.

Almost surely, 2^389140424 is an apocalyptic number.

It is an amenable number.

389140424 is a deficient number, since it is larger than the sum of its proper divisors (340497886).

389140424 is a wasteful number, since it uses less digits than its factorization.

389140424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48642559 (or 48642555 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 389140424 is about 19726.6424918180. The cubic root of 389140424 is about 730.0771945639.

The spelling of 389140424 in words is "three hundred eighty-nine million, one hundred forty thousand, four hundred twenty-four".