402988799 has 4 divisors (see below), whose sum is σ = 405098880. Its totient is φ = 400878720.

The previous prime is 402988739. The next prime is 402988801. The reversal of 402988799 is 997889204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 402988799 - 2²⁰ = 401940223 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 (402988709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054754 + ... + 1055135.

It is an arithmetic number, because the mean of its divisors is an integer number (101274720).

Almost surely, 2^402988799 is an apocalyptic number.

402988799 is a deficient number, since it is larger than the sum of its proper divisors (2110081).

402988799 is a wasteful number, since it uses less digits than its factorization.

402988799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110080.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 402988799 is about 20074.5809171699. The cubic root of 402988799 is about 738.6368861679.

The spelling of 402988799 in words is "four hundred two million, nine hundred eighty-eight thousand, seven hundred ninety-nine".