405315497 has 2 divisors, whose sum is σ = 405315498. Its totient is φ = 405315496.

The previous prime is 405315473. The next prime is 405315511. The reversal of 405315497 is 794513504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337236496 + 68079001 = 18364^2 + 8251^2 .

It is a cyclic number.

It is not a de Polignac number, because 405315497 - 2²⁶ = 338206633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405315497.

It is not a weakly prime, because it can be changed into another prime (405315457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202657748 + 202657749.

It is an arithmetic number, because the mean of its divisors is an integer number (202657749).

Almost surely, 2^405315497 is an apocalyptic number.

It is an amenable number.

405315497 is a deficient number, since it is larger than the sum of its proper divisors (1).

405315497 is an equidigital number, since it uses as much as digits as its factorization.

405315497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 405315497 is about 20132.4488575036. The cubic root of 405315497 is about 740.0556915719.

The spelling of 405315497 in words is "four hundred five million, three hundred fifteen thousand, four hundred ninety-seven".