390389203 has 8 divisors (see below), whose sum is σ = 397375856. Its totient is φ = 383421600.

The previous prime is 390389159. The next prime is 390389221. The reversal of 390389203 is 302983093.

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-390389203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390389803) 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 7 ways as a sum of consecutive naturals, for example, 40348 + ... + 49078.

It is an arithmetic number, because the mean of its divisors is an integer number (49671982).

Almost surely, 2^390389203 is an apocalyptic number.

390389203 is a deficient number, since it is larger than the sum of its proper divisors (6986653).

390389203 is an equidigital number, since it uses as much as digits as its factorization.

390389203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9525.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 390389203 is about 19758.2692308815. The cubic root of 390389203 is about 730.8573170303.

The spelling of 390389203 in words is "three hundred ninety million, three hundred eighty-nine thousand, two hundred three".