40009492 has 12 divisors (see below), whose sum is σ = 70175700. Its totient is φ = 19959296.

The previous prime is 40009477. The next prime is 40009511. The reversal of 40009492 is 29490004.

40009492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29224836 + 10784656 = 5406^2 + 3284^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40009492.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9343 + ... + 12934.

It is an arithmetic number, because the mean of its divisors is an integer number (5847975).

Almost surely, 2^40009492 is an apocalyptic number.

It is an amenable number.

40009492 is a deficient number, since it is larger than the sum of its proper divisors (30166208).

40009492 is a wasteful number, since it uses less digits than its factorization.

40009492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22730 (or 22728 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40009492 is about 6325.3056843128. The cubic root of 40009492 is about 342.0222390153.

Adding to 40009492 its reverse (29490004), we get a palindrome (69499496).

The spelling of 40009492 in words is "forty million, nine thousand, four hundred ninety-two".