402376393 has 2 divisors, whose sum is σ = 402376394. Its totient is φ = 402376392.

The previous prime is 402376379. The next prime is 402376411. The reversal of 402376393 is 393673204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289952784 + 112423609 = 17028^2 + 10603^2 .

It is a cyclic number.

It is not a de Polignac number, because 402376393 - 2⁹ = 402375881 is a prime.

It is not a weakly prime, because it can be changed into another prime (402376333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201188196 + 201188197.

It is an arithmetic number, because the mean of its divisors is an integer number (201188197).

Almost surely, 2^402376393 is an apocalyptic number.

It is an amenable number.

402376393 is a deficient number, since it is larger than the sum of its proper divisors (1).

402376393 is an equidigital number, since it uses as much as digits as its factorization.

402376393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 37.

The square root of 402376393 is about 20059.3218479589. The cubic root of 402376393 is about 738.2625374740.

The spelling of 402376393 in words is "four hundred two million, three hundred seventy-six thousand, three hundred ninety-three".