402990803 has 2 divisors, whose sum is σ = 402990804. Its totient is φ = 402990802.

The previous prime is 402990781. The next prime is 402990857. The reversal of 402990803 is 308099204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402990803 - 2⁸ = 402990547 is a prime.

It is not a weakly prime, because it can be changed into another prime (402990103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201495401 + 201495402.

It is an arithmetic number, because the mean of its divisors is an integer number (201495402).

Almost surely, 2^402990803 is an apocalyptic number.

402990803 is a deficient number, since it is larger than the sum of its proper divisors (1).

402990803 is an equidigital number, since it uses as much as digits as its factorization.

402990803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 402990803 is about 20074.6308309767. The cubic root of 402990803 is about 738.6381105410.

The spelling of 402990803 in words is "four hundred two million, nine hundred ninety thousand, eight hundred three".