402974219 has 2 divisors, whose sum is σ = 402974220. Its totient is φ = 402974218.

The previous prime is 402974197. The next prime is 402974233. The reversal of 402974219 is 912479204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402974219 - 2¹⁶ = 402908683 is a prime.

It is a super-2 number, since 2×402974219² = 324776442357319922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402974279) 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 as a sum of consecutive naturals, namely, 201487109 + 201487110.

It is an arithmetic number, because the mean of its divisors is an integer number (201487110).

Almost surely, 2^402974219 is an apocalyptic number.

402974219 is a deficient number, since it is larger than the sum of its proper divisors (1).

402974219 is an equidigital number, since it uses as much as digits as its factorization.

402974219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 402974219 is about 20074.2177680726. The cubic root of 402974219 is about 738.6279781820.

The spelling of 402974219 in words is "four hundred two million, nine hundred seventy-four thousand, two hundred nineteen".