402443039293 has 2 divisors, whose sum is σ = 402443039294. Its totient is φ = 402443039292.

The previous prime is 402443039287. The next prime is 402443039351. The reversal of 402443039293 is 392930344204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269799214084 + 132643825209 = 519422^2 + 364203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402443039293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402443039093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201221519646 + 201221519647.

It is an arithmetic number, because the mean of its divisors is an integer number (201221519647).

Almost surely, 2^402443039293 is an apocalyptic number.

It is an amenable number.

402443039293 is a deficient number, since it is larger than the sum of its proper divisors (1).

402443039293 is an equidigital number, since it uses as much as digits as its factorization.

402443039293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 402443039293 in words is "four hundred two billion, four hundred forty-three million, thirty-nine thousand, two hundred ninety-three".