402938005 has 4 divisors (see below), whose sum is σ = 483525612. Its totient is φ = 322350400.

The previous prime is 402937991. The next prime is 402938023. The reversal of 402938005 is 500839204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 211586116 + 191351889 = 14546^2 + 13833^2 .

It is not a de Polignac number, because 402938005 - 2¹⁷ = 402806933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40293796 + ... + 40293805.

It is an arithmetic number, because the mean of its divisors is an integer number (120881403).

Almost surely, 2^402938005 is an apocalyptic number.

It is an amenable number.

402938005 is a deficient number, since it is larger than the sum of its proper divisors (80587607).

402938005 is an equidigital number, since it uses as much as digits as its factorization.

402938005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80587606.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 402938005 is about 20073.3157450382. The cubic root of 402938005 is about 738.6058514771.

The spelling of 402938005 in words is "four hundred two million, nine hundred thirty-eight thousand, five".