409622917442 has 18 divisors (see below), whose sum is σ = 648502288083. Its totient is φ = 194023762164.

The previous prime is 409622917441. The next prime is 409622917463. The reversal of 409622917442 is 244719226904.

It can be written as a sum of positive squares in only one way, i.e., 204811458721 + 204811458721 = 452561^2 + 452561^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=452561.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409622917441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17185409 + ... + 17209227.

Almost surely, 2^409622917442 is an apocalyptic number.

409622917442 is a deficient number, since it is larger than the sum of its proper divisors (238879370641).

409622917442 is an frugal number, since it uses more digits than its factorization.

409622917442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47678 (or 23840 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

Multiplying 409622917442 by its sum of digits (50), we get a square (20481145872100 = 4525610²).

The spelling of 409622917442 in words is "four hundred nine billion, six hundred twenty-two million, nine hundred seventeen thousand, four hundred forty-two".