403799990 has 24 divisors (see below), whose sum is σ = 798925680. Its totient is φ = 146835920.

The previous prime is 403799987. The next prime is 403799993. The reversal of 403799990 is 99997304.

It is an interprime number because it is at equal distance from previous prime (403799987) and next prime (403799993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403799993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165650 + ... + 168069.

It is an arithmetic number, because the mean of its divisors is an integer number (33288570).

Almost surely, 2^403799990 is an apocalyptic number.

403799990 is a deficient number, since it is larger than the sum of its proper divisors (395125690).

403799990 is a wasteful number, since it uses less digits than its factorization.

403799990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333748 (or 333737 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 403799990 is about 20094.7751915765. The cubic root of 403799990 is about 739.1321637957.

The spelling of 403799990 in words is "four hundred three million, seven hundred ninety-nine thousand, nine hundred ninety".