390450425 has 24 divisors (see below), whose sum is σ = 501253632. Its totient is φ = 301392000.

The previous prime is 390450419. The next prime is 390450427. The reversal of 390450425 is 524054093.

It is a happy number.

It is not a de Polignac number, because 390450425 - 2⁴ = 390450409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390450391 and 390450400.

It is not an unprimeable number, because it can be changed into a prime (390450427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403292 + ... + 404258.

It is an arithmetic number, because the mean of its divisors is an integer number (20885568).

Almost surely, 2^390450425 is an apocalyptic number.

It is an amenable number.

390450425 is a deficient number, since it is larger than the sum of its proper divisors (110803207).

390450425 is a wasteful number, since it uses less digits than its factorization.

390450425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 390450425 is about 19759.8184455222. The cubic root of 390450425 is about 730.8955201086.

The spelling of 390450425 in words is "three hundred ninety million, four hundred fifty thousand, four hundred twenty-five".