40552769 has 6 divisors (see below), whose sum is σ = 43078854. Its totient is φ = 38167040.

The previous prime is 40552763. The next prime is 40552789. The reversal of 40552769 is 96725504.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 21298225 + 19254544 = 4615^2 + 4388^2 .

It is not a de Polignac number, because 40552769 - 2²⁰ = 39504193 is a prime.

It is a super-2 number, since 2×40552769² = 3289054147134722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40552763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69872 + ... + 70449.

It is an arithmetic number, because the mean of its divisors is an integer number (7179809).

Almost surely, 2^40552769 is an apocalyptic number.

It is an amenable number.

40552769 is a deficient number, since it is larger than the sum of its proper divisors (2526085).

40552769 is a wasteful number, since it uses less digits than its factorization.

40552769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140355 (or 140338 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 40552769 is about 6368.1056052801. The cubic root of 40552769 is about 343.5633572351.

The spelling of 40552769 in words is "forty million, five hundred fifty-two thousand, seven hundred sixty-nine".