40445969 has 8 divisors (see below), whose sum is σ = 40839168. Its totient is φ = 40055040.

The previous prime is 40445953. The next prime is 40445971. The reversal of 40445969 is 96954404.

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 40445969 - 2⁴ = 40445953 is a prime.

It is a super-2 number, since 2×40445969² = 3271752816697922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40445269) 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, 69809 + ... + 70385.

It is an arithmetic number, because the mean of its divisors is an integer number (5104896).

Almost surely, 2^40445969 is an apocalyptic number.

It is an amenable number.

40445969 is a deficient number, since it is larger than the sum of its proper divisors (393199).

40445969 is a wasteful number, since it uses less digits than its factorization.

40445969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 40445969 is about 6359.7145376188. The cubic root of 40445969 is about 343.2614886170.

It can be divided in two parts, 40445 and 969, that added together give a palindrome (41414).

The spelling of 40445969 in words is "forty million, four hundred forty-five thousand, nine hundred sixty-nine".