40448808489 has 4 divisors (see below), whose sum is σ = 53931744656. Its totient is φ = 26965872324.

The previous prime is 40448808487. The next prime is 40448808503. The reversal of 40448808489 is 98480884404.

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 not a de Polignac number, because 40448808489 - 2¹ = 40448808487 is a prime.

It is a super-2 number, since 2×40448808489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40448808487) 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, 6741468079 + ... + 6741468084.

It is an arithmetic number, because the mean of its divisors is an integer number (13482936164).

Almost surely, 2^40448808489 is an apocalyptic number.

It is an amenable number.

40448808489 is a deficient number, since it is larger than the sum of its proper divisors (13482936167).

40448808489 is a wasteful number, since it uses less digits than its factorization.

40448808489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13482936166.

The product of its (nonzero) digits is 9437184, while the sum is 57.

The spelling of 40448808489 in words is "forty billion, four hundred forty-eight million, eight hundred eight thousand, four hundred eighty-nine".