390309424 has 10 divisors (see below), whose sum is σ = 756224540. Its totient is φ = 195154704.

The previous prime is 390309421. The next prime is 390309449. The reversal of 390309424 is 424903093.

It is a self number, because there is not a number n which added to its sum of digits gives 390309424.

It is not an unprimeable number, because it can be changed into a prime (390309421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12197154 + ... + 12197185.

It is an arithmetic number, because the mean of its divisors is an integer number (75622454).

Almost surely, 2^390309424 is an apocalyptic number.

It is an amenable number.

390309424 is a deficient number, since it is larger than the sum of its proper divisors (365915116).

390309424 is a wasteful number, since it uses less digits than its factorization.

390309424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24394347 (or 24394341 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 390309424 is about 19756.2502515027. The cubic root of 390309424 is about 730.8075282232.

The spelling of 390309424 in words is "three hundred ninety million, three hundred nine thousand, four hundred twenty-four".