405173663 has 2 divisors, whose sum is σ = 405173664. Its totient is φ = 405173662.

The previous prime is 405173633. The next prime is 405173669. The reversal of 405173663 is 366371504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405173663 - 2¹⁶ = 405108127 is a prime.

It is a Sophie Germain prime.

It is equal to p_21597353 and since 405173663 and 21597353 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405173669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202586831 + 202586832.

It is an arithmetic number, because the mean of its divisors is an integer number (202586832).

Almost surely, 2^405173663 is an apocalyptic number.

405173663 is a deficient number, since it is larger than the sum of its proper divisors (1).

405173663 is an equidigital number, since it uses as much as digits as its factorization.

405173663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 405173663 is about 20128.9260269891. The cubic root of 405173663 is about 739.9693577524.

The spelling of 405173663 in words is "four hundred five million, one hundred seventy-three thousand, six hundred sixty-three".