402999420749 has 2 divisors, whose sum is σ = 402999420750. Its totient is φ = 402999420748.

The previous prime is 402999420679. The next prime is 402999420793. The reversal of 402999420749 is 947024999204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386999700649 + 15999720100 = 622093^2 + 126490^2 .

It is a cyclic number.

It is not a de Polignac number, because 402999420749 - 2²⁰ = 402998372173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402999120749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201499710374 + 201499710375.

It is an arithmetic number, because the mean of its divisors is an integer number (201499710375).

Almost surely, 2^402999420749 is an apocalyptic number.

It is an amenable number.

402999420749 is a deficient number, since it is larger than the sum of its proper divisors (1).

402999420749 is an equidigital number, since it uses as much as digits as its factorization.

402999420749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 402999420749 in words is "four hundred two billion, nine hundred ninety-nine million, four hundred twenty thousand, seven hundred forty-nine".