402344413 has 2 divisors, whose sum is σ = 402344414. Its totient is φ = 402344412.

The previous prime is 402344407. The next prime is 402344417. The reversal of 402344413 is 314443204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272316004 + 130028409 = 16502^2 + 11403^2 .

It is a cyclic number.

It is not a de Polignac number, because 402344413 - 2⁹ = 402343901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402344417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201172206 + 201172207.

It is an arithmetic number, because the mean of its divisors is an integer number (201172207).

Almost surely, 2^402344413 is an apocalyptic number.

It is an amenable number.

402344413 is a deficient number, since it is larger than the sum of its proper divisors (1).

402344413 is an equidigital number, since it uses as much as digits as its factorization.

402344413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 402344413 is about 20058.5246964975. The cubic root of 402344413 is about 738.2429784559.

Adding to 402344413 its reverse (314443204), we get a palindrome (716787617).

The spelling of 402344413 in words is "four hundred two million, three hundred forty-four thousand, four hundred thirteen".