402403013 has 4 divisors (see below), whose sum is σ = 403714080. Its totient is φ = 401091948.

The previous prime is 402402967. The next prime is 402403019. The reversal of 402403013 is 310304204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402403013 - 2⁸ = 402402757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402402982 and 402403000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402403019) 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, 655073 + ... + 655686.

It is an arithmetic number, because the mean of its divisors is an integer number (100928520).

Almost surely, 2^402403013 is an apocalyptic number.

It is an amenable number.

402403013 is a deficient number, since it is larger than the sum of its proper divisors (1311067).

402403013 is a wasteful number, since it uses less digits than its factorization.

402403013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311066.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 402403013 is about 20059.9853688880. The cubic root of 402403013 is about 738.2788175173.

Adding to 402403013 its reverse (310304204), we get a palindrome (712707217).

The spelling of 402403013 in words is "four hundred two million, four hundred three thousand, thirteen".