402266404469 has 2 divisors, whose sum is σ = 402266404470. Its totient is φ = 402266404468.

The previous prime is 402266404453. The next prime is 402266404487. The reversal of 402266404469 is 964404662204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327283535569 + 74982868900 = 572087^2 + 273830^2 .

It is a cyclic number.

It is not a de Polignac number, because 402266404469 - 2⁴ = 402266404453 is a prime.

It is a super-2 number, since 2×402266404469² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402266404429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201133202234 + 201133202235.

It is an arithmetic number, because the mean of its divisors is an integer number (201133202235).

Almost surely, 2^402266404469 is an apocalyptic number.

It is an amenable number.

402266404469 is a deficient number, since it is larger than the sum of its proper divisors (1).

402266404469 is an equidigital number, since it uses as much as digits as its factorization.

402266404469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 47.

The spelling of 402266404469 in words is "four hundred two billion, two hundred sixty-six million, four hundred four thousand, four hundred sixty-nine".