40424392 has 16 divisors (see below), whose sum is σ = 75968460. Its totient is φ = 20166144.

The previous prime is 40424369. The next prime is 40424393. The reversal of 40424392 is 29342404.

It can be written as a sum of positive squares in 2 ways, for example, as 40373316 + 51076 = 6354^2 + 226^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40424392.

It is not an unprimeable number, because it can be changed into a prime (40424393) 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, 1873 + ... + 9184.

Almost surely, 2^40424392 is an apocalyptic number.

It is an amenable number.

40424392 is a deficient number, since it is larger than the sum of its proper divisors (35544068).

40424392 is a wasteful number, since it uses less digits than its factorization.

40424392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11520 (or 11516 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40424392 is about 6358.0179301414. The cubic root of 40424392 is about 343.2004370397.

Adding to 40424392 its reverse (29342404), we get a palindrome (69766796).

The spelling of 40424392 in words is "forty million, four hundred twenty-four thousand, three hundred ninety-two".