402442219 has 2 divisors, whose sum is σ = 402442220. Its totient is φ = 402442218.

The previous prime is 402442181. The next prime is 402442223. The reversal of 402442219 is 912244204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402442219 - 2⁹ = 402441707 is a prime.

It is a super-2 number, since 2×402442219² = 323919479267287922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402442319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201221109 + 201221110.

It is an arithmetic number, because the mean of its divisors is an integer number (201221110).

Almost surely, 2^402442219 is an apocalyptic number.

402442219 is a deficient number, since it is larger than the sum of its proper divisors (1).

402442219 is an equidigital number, since it uses as much as digits as its factorization.

402442219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 402442219 is about 20060.9625641443. The cubic root of 402442219 is about 738.3027934970.

The spelling of 402442219 in words is "four hundred two million, four hundred forty-two thousand, two hundred nineteen".