389471942 has 4 divisors (see below), whose sum is σ = 584207916. Its totient is φ = 194735970.

The previous prime is 389471917. The next prime is 389471963. The reversal of 389471942 is 249174983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249174983 = 37 ⋅6734459.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97367984 + ... + 97367987.

It is an arithmetic number, because the mean of its divisors is an integer number (146051979).

Almost surely, 2^389471942 is an apocalyptic number.

389471942 is a deficient number, since it is larger than the sum of its proper divisors (194735974).

389471942 is a wasteful number, since it uses less digits than its factorization.

389471942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194735973.

The product of its digits is 435456, while the sum is 47.

The square root of 389471942 is about 19735.0435013455. The cubic root of 389471942 is about 730.2844591035.

The spelling of 389471942 in words is "three hundred eighty-nine million, four hundred seventy-one thousand, nine hundred forty-two".