402440214349 has 2 divisors, whose sum is σ = 402440214350. Its totient is φ = 402440214348.

The previous prime is 402440214299. The next prime is 402440214353. The reversal of 402440214349 is 943412044204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317588602500 + 84851611849 = 563550^2 + 291293^2 .

It is a cyclic number.

It is not a de Polignac number, because 402440214349 - 2²¹ = 402438117197 is a prime.

It is a super-2 number, since 2×402440214349² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402440314349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201220107174 + 201220107175.

It is an arithmetic number, because the mean of its divisors is an integer number (201220107175).

Almost surely, 2^402440214349 is an apocalyptic number.

It is an amenable number.

402440214349 is a deficient number, since it is larger than the sum of its proper divisors (1).

402440214349 is an equidigital number, since it uses as much as digits as its factorization.

402440214349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 402440214349 in words is "four hundred two billion, four hundred forty million, two hundred fourteen thousand, three hundred forty-nine".