402370849 has 2 divisors, whose sum is σ = 402370850. Its totient is φ = 402370848.

The previous prime is 402370831. The next prime is 402370861. The reversal of 402370849 is 948073204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238146624 + 164224225 = 15432^2 + 12815^2 .

It is a cyclic number.

It is not a de Polignac number, because 402370849 - 2⁷ = 402370721 is a prime.

It is not a weakly prime, because it can be changed into another prime (402970849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201185424 + 201185425.

It is an arithmetic number, because the mean of its divisors is an integer number (201185425).

Almost surely, 2^402370849 is an apocalyptic number.

It is an amenable number.

402370849 is a deficient number, since it is larger than the sum of its proper divisors (1).

402370849 is an equidigital number, since it uses as much as digits as its factorization.

402370849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 402370849 is about 20059.1836573675. The cubic root of 402370849 is about 738.2591468291.

The spelling of 402370849 in words is "four hundred two million, three hundred seventy thousand, eight hundred forty-nine".