405416269 has 2 divisors, whose sum is σ = 405416270. Its totient is φ = 405416268.

The previous prime is 405416261. The next prime is 405416273. The reversal of 405416269 is 962614504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325080900 + 80335369 = 18030^2 + 8963^2 .

It is a cyclic number.

It is not a de Polignac number, because 405416269 - 2³ = 405416261 is a prime.

It is a super-2 number, since 2×405416269² = 328724702339760722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405416261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202708134 + 202708135.

It is an arithmetic number, because the mean of its divisors is an integer number (202708135).

Almost surely, 2^405416269 is an apocalyptic number.

It is an amenable number.

405416269 is a deficient number, since it is larger than the sum of its proper divisors (1).

405416269 is an equidigital number, since it uses as much as digits as its factorization.

405416269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 405416269 is about 20134.9514278033. The cubic root of 405416269 is about 740.1170188696.

The spelling of 405416269 in words is "four hundred five million, four hundred sixteen thousand, two hundred sixty-nine".