40544769 has 4 divisors (see below), whose sum is σ = 54059696. Its totient is φ = 27029844.

The previous prime is 40544747. The next prime is 40544773. The reversal of 40544769 is 96744504.

It is a happy number.

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 40544769 - 2⁷ = 40544641 is a prime.

It is a super-2 number, since 2×40544769² = 3287756586526722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40544719) 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, 6757459 + ... + 6757464.

It is an arithmetic number, because the mean of its divisors is an integer number (13514924).

Almost surely, 2^40544769 is an apocalyptic number.

It is an amenable number.

40544769 is a deficient number, since it is larger than the sum of its proper divisors (13514927).

40544769 is a wasteful number, since it uses less digits than its factorization.

40544769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13514926.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 40544769 is about 6367.4774440119. The cubic root of 40544769 is about 343.5407637297.

The spelling of 40544769 in words is "forty million, five hundred forty-four thousand, seven hundred sixty-nine".