402065269 has 2 divisors, whose sum is σ = 402065270. Its totient is φ = 402065268.

The previous prime is 402065221. The next prime is 402065329. The reversal of 402065269 is 962560204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247684644 + 154380625 = 15738^2 + 12425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402065269 is a prime.

It is a super-2 number, since 2×402065269² = 323312961072084722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402065219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201032634 + 201032635.

It is an arithmetic number, because the mean of its divisors is an integer number (201032635).

Almost surely, 2^402065269 is an apocalyptic number.

It is an amenable number.

402065269 is a deficient number, since it is larger than the sum of its proper divisors (1).

402065269 is an equidigital number, since it uses as much as digits as its factorization.

402065269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 402065269 is about 20051.5652506232. The cubic root of 402065269 is about 738.0722095261.

The spelling of 402065269 in words is "four hundred two million, sixty-five thousand, two hundred sixty-nine".