409799441689 has 4 divisors (see below), whose sum is σ = 447053936400. Its totient is φ = 372544946980.

The previous prime is 409799441683. The next prime is 409799441707. The reversal of 409799441689 is 986144997904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409799441689 is a prime.

It is a super-2 number, since 2×409799441689² (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 (409799441683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18627247339 + ... + 18627247360.

It is an arithmetic number, because the mean of its divisors is an integer number (111763484100).

Almost surely, 2^409799441689 is an apocalyptic number.

It is an amenable number.

409799441689 is a deficient number, since it is larger than the sum of its proper divisors (37254494711).

409799441689 is a wasteful number, since it uses less digits than its factorization.

409799441689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37254494710.

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 409799441689 in words is "four hundred nine billion, seven hundred ninety-nine million, four hundred forty-one thousand, six hundred eighty-nine".