40347444769 has 8 divisors (see below), whose sum is σ = 40516332840. Its totient is φ = 40178697216.

The previous prime is 40347444763. The next prime is 40347444803. The reversal of 40347444769 is 96744474304.

It can be written as a sum of positive squares in 4 ways, for example, as 11982148369 + 28365296400 = 109463^2 + 168420^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40347444769 - 2¹⁷ = 40347313697 is a prime.

It is a super-2 number, since 2×40347444769² (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 (40347444763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561409 + ... + 629185.

It is an arithmetic number, because the mean of its divisors is an integer number (5064541605).

Almost surely, 2^40347444769 is an apocalyptic number.

It is an amenable number.

40347444769 is a deficient number, since it is larger than the sum of its proper divisors (168888071).

40347444769 is a wasteful number, since it uses less digits than its factorization.

40347444769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70259.

The product of its (nonzero) digits is 8128512, while the sum is 52.

The spelling of 40347444769 in words is "forty billion, three hundred forty-seven million, four hundred forty-four thousand, seven hundred sixty-nine".