405336623 has 2 divisors, whose sum is σ = 405336624. Its totient is φ = 405336622.

The previous prime is 405336611. The next prime is 405336653. The reversal of 405336623 is 326633504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405336623 - 2¹⁰ = 405335599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405336623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405336653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202668311 + 202668312.

It is an arithmetic number, because the mean of its divisors is an integer number (202668312).

Almost surely, 2^405336623 is an apocalyptic number.

405336623 is a deficient number, since it is larger than the sum of its proper divisors (1).

405336623 is an equidigital number, since it uses as much as digits as its factorization.

405336623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 405336623 is about 20132.9735260343. The cubic root of 405336623 is about 740.0685491648.

The spelling of 405336623 in words is "four hundred five million, three hundred thirty-six thousand, six hundred twenty-three".