390589742 has 4 divisors (see below), whose sum is σ = 585884616. Its totient is φ = 195294870.

The previous prime is 390589741. The next prime is 390589747. The reversal of 390589742 is 247985093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390589741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97647434 + ... + 97647437.

It is an arithmetic number, because the mean of its divisors is an integer number (146471154).

Almost surely, 2^390589742 is an apocalyptic number.

390589742 is a deficient number, since it is larger than the sum of its proper divisors (195294874).

390589742 is a wasteful number, since it uses less digits than its factorization.

390589742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195294873.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 390589742 is about 19763.3433912382. The cubic root of 390589742 is about 730.9824402878.

The spelling of 390589742 in words is "three hundred ninety million, five hundred eighty-nine thousand, seven hundred forty-two".