390387334 has 4 divisors (see below), whose sum is σ = 585581004. Its totient is φ = 195193666.

The previous prime is 390387331. The next prime is 390387343. The reversal of 390387334 is 433783093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433783093 = 31 ⋅13993003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390387331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97596832 + ... + 97596835.

It is an arithmetic number, because the mean of its divisors is an integer number (146395251).

Almost surely, 2^390387334 is an apocalyptic number.

390387334 is a deficient number, since it is larger than the sum of its proper divisors (195193670).

390387334 is a wasteful number, since it uses less digits than its factorization.

390387334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195193669.

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 390387334 is about 19758.2219341721. The cubic root of 390387334 is about 730.8561506947.

The spelling of 390387334 in words is "three hundred ninety million, three hundred eighty-seven thousand, three hundred thirty-four".