390438103 has 4 divisors (see below), whose sum is σ = 425932488. Its totient is φ = 354943720.

The previous prime is 390438079. The next prime is 390438173. The reversal of 390438103 is 301834093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301834093 = 11 ⋅27439463.

It is a cyclic number.

It is not a de Polignac number, because 390438103 - 2²¹ = 388340951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390438173) 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 3 ways as a sum of consecutive naturals, for example, 17747176 + ... + 17747197.

It is an arithmetic number, because the mean of its divisors is an integer number (106483122).

Almost surely, 2^390438103 is an apocalyptic number.

390438103 is a deficient number, since it is larger than the sum of its proper divisors (35494385).

390438103 is a wasteful number, since it uses less digits than its factorization.

390438103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35494384.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 390438103 is about 19759.5066486995. The cubic root of 390438103 is about 730.8878313908.

The spelling of 390438103 in words is "three hundred ninety million, four hundred thirty-eight thousand, one hundred three".