400285202269 has 2 divisors, whose sum is σ = 400285202270. Its totient is φ = 400285202268.

The previous prime is 400285202243. The next prime is 400285202279. The reversal of 400285202269 is 962202582004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201179160900 + 199106041369 = 448530^2 + 446213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400285202269 is a prime.

It is a super-2 number, since 2×400285202269² (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 (400285202279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200142601134 + 200142601135.

It is an arithmetic number, because the mean of its divisors is an integer number (200142601135).

Almost surely, 2^400285202269 is an apocalyptic number.

It is an amenable number.

400285202269 is a deficient number, since it is larger than the sum of its proper divisors (1).

400285202269 is an equidigital number, since it uses as much as digits as its factorization.

400285202269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 400285202269 in words is "four hundred billion, two hundred eighty-five million, two hundred two thousand, two hundred sixty-nine".