402274447 has 2 divisors, whose sum is σ = 402274448. Its totient is φ = 402274446.

The previous prime is 402274387. The next prime is 402274469. The reversal of 402274447 is 744472204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402274447 - 2⁷ = 402274319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402274487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201137223 + 201137224.

It is an arithmetic number, because the mean of its divisors is an integer number (201137224).

Almost surely, 2^402274447 is an apocalyptic number.

402274447 is a deficient number, since it is larger than the sum of its proper divisors (1).

402274447 is an equidigital number, since it uses as much as digits as its factorization.

402274447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50176, while the sum is 34.

The square root of 402274447 is about 20056.7805741600. The cubic root of 402274447 is about 738.2001835262.

The spelling of 402274447 in words is "four hundred two million, two hundred seventy-four thousand, four hundred forty-seven".