402802393 has 16 divisors (see below), whose sum is σ = 476204800. Its totient is φ = 340508448.

The previous prime is 402802391. The next prime is 402802417. The reversal of 402802393 is 393208204.

It is not a de Polignac number, because 402802393 - 2¹ = 402802391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402802391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16996 + ... + 33082.

It is an arithmetic number, because the mean of its divisors is an integer number (29762800).

Almost surely, 2^402802393 is an apocalyptic number.

It is an amenable number.

402802393 is a deficient number, since it is larger than the sum of its proper divisors (73402407).

402802393 is an equidigital number, since it uses as much as digits as its factorization.

402802393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16181 (or 16167 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 402802393 is about 20069.9375435002. The cubic root of 402802393 is about 738.5229809489.

The spelling of 402802393 in words is "four hundred two million, eight hundred two thousand, three hundred ninety-three".