389970961 has 4 divisors (see below), whose sum is σ = 390271552. Its totient is φ = 389670372.

The previous prime is 389970907. The next prime is 389971063. The reversal of 389970961 is 169079983.

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 a de Polignac number, because none of the positive numbers 2^k-389970961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389970899 and 389970908.

It is not an unprimeable number, because it can be changed into a prime (389170961) 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, 148341 + ... + 150946.

It is an arithmetic number, because the mean of its divisors is an integer number (97567888).

Almost surely, 2^389970961 is an apocalyptic number.

It is an amenable number.

389970961 is a deficient number, since it is larger than the sum of its proper divisors (300591).

389970961 is a wasteful number, since it uses less digits than its factorization.

389970961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300590.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 389970961 is about 19747.6824209830. The cubic root of 389970961 is about 730.5962233576.

The spelling of 389970961 in words is "three hundred eighty-nine million, nine hundred seventy thousand, nine hundred sixty-one".