390975403 has 8 divisors (see below), whose sum is σ = 481200608. Its totient is φ = 309343104.

The previous prime is 390975397. The next prime is 390975427. The reversal of 390975403 is 304579093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-390975403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390975703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148126 + ... + 2148307.

It is an arithmetic number, because the mean of its divisors is an integer number (60150076).

Almost surely, 2^390975403 is an apocalyptic number.

390975403 is a deficient number, since it is larger than the sum of its proper divisors (90225205).

390975403 is a wasteful number, since it uses less digits than its factorization.

390975403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296453.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 390975403 is about 19773.0979616245. The cubic root of 390975403 is about 731.2229472740. Note that the first 3 decimals are identical.

The spelling of 390975403 in words is "three hundred ninety million, nine hundred seventy-five thousand, four hundred three".