405273465 has 12 divisors (see below), whose sum is σ = 702474084. Its totient is φ = 216145824.

The previous prime is 405273461. The next prime is 405273481. The reversal of 405273465 is 564372504.

405273465 is a `hidden beast` number, since 40 + 527 + 34 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 283855104 + 121418361 = 16848^2 + 11019^2 .

It is not a de Polignac number, because 405273465 - 2² = 405273461 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (405273461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4502994 + ... + 4503083.

It is an arithmetic number, because the mean of its divisors is an integer number (58539507).

Almost surely, 2^405273465 is an apocalyptic number.

405273465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

405273465 is a deficient number, since it is larger than the sum of its proper divisors (297200619).

405273465 is a wasteful number, since it uses less digits than its factorization.

405273465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006088 (or 9006085 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 405273465 is about 20131.4049435205. The cubic root of 405273465 is about 740.0301089527.

The spelling of 405273465 in words is "four hundred five million, two hundred seventy-three thousand, four hundred sixty-five".