40424969 has 6 divisors (see below), whose sum is σ = 43773966. Its totient is φ = 37315200.

The previous prime is 40424933. The next prime is 40424983. The reversal of 40424969 is 96942404.

It can be written as a sum of positive squares in 3 ways, for example, as 1836025 + 38588944 = 1355^2 + 6212^2 .

It is not a de Polignac number, because 40424969 - 2¹² = 40420873 is a prime.

It is a super-2 number, since 2×40424969² = 3268356237301922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40424999) 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, 119432 + ... + 119769.

It is an arithmetic number, because the mean of its divisors is an integer number (7295661).

Almost surely, 2^40424969 is an apocalyptic number.

It is an amenable number.

40424969 is a deficient number, since it is larger than the sum of its proper divisors (3348997).

40424969 is a wasteful number, since it uses less digits than its factorization.

40424969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239227 (or 239214 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 40424969 is about 6358.0633057559. The cubic root of 40424969 is about 343.2020699294.

The spelling of 40424969 in words is "forty million, four hundred twenty-four thousand, nine hundred sixty-nine".