409623099905 has 32 divisors (see below), whose sum is σ = 525403666944. Its totient is φ = 305497378816.

The previous prime is 409623099901. The next prime is 409623099917. The reversal of 409623099905 is 509990326904.

It is not a de Polignac number, because 409623099905 - 2² = 409623099901 is a prime.

It is a super-2 number, since 2×409623099905² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409623099901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15998744 + ... + 16024326.

It is an arithmetic number, because the mean of its divisors is an integer number (16418864592).

Almost surely, 2^409623099905 is an apocalyptic number.

It is an amenable number.

409623099905 is a deficient number, since it is larger than the sum of its proper divisors (115780567039).

409623099905 is a wasteful number, since it uses less digits than its factorization.

409623099905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27385.

The product of its (nonzero) digits is 4723920, while the sum is 56.

The spelling of 409623099905 in words is "four hundred nine billion, six hundred twenty-three million, ninety-nine thousand, nine hundred five".