7990403 has 4 divisors (see below), whose sum is σ = 8017968. Its totient is φ = 7962840.

The previous prime is 7990379. The next prime is 7990427. The reversal of 7990403 is 3040997.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (7990379) and next prime (7990427).

It is a cyclic number.

It is not a de Polignac number, because 7990403 - 2²² = 3796099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7990403.

It is not an unprimeable number, because it can be changed into a prime (7999403) 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 in 3 ways as a sum of consecutive naturals, for example, 13343 + ... + 13928.

It is an arithmetic number, because the mean of its divisors is an integer number (2004492).

Almost surely, 2^7990403 is an apocalyptic number.

7990403 is a deficient number, since it is larger than the sum of its proper divisors (27565).

7990403 is a wasteful number, since it uses less digits than its factorization.

7990403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27564.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 7990403 is about 2826.7300896973. The cubic root of 7990403 is about 199.9199929987.

The spelling of 7990403 in words is "seven million, nine hundred ninety thousand, four hundred three".