40239816 has 32 divisors (see below), whose sum is σ = 106518240. Its totient is φ = 12624128.

The previous prime is 40239803. The next prime is 40239817. The reversal of 40239816 is 61893204.

It is not an unprimeable number, because it can be changed into a prime (40239817) 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, 48906 + ... + 49721.

It is an arithmetic number, because the mean of its divisors is an integer number (3328695).

Almost surely, 2^40239816 is an apocalyptic number.

It is an amenable number.

40239816 is an abundant number, since it is smaller than the sum of its proper divisors (66278424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40239816 is a wasteful number, since it uses less digits than its factorization.

40239816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98653 (or 98649 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40239816 is about 6343.4861078117. The cubic root of 40239816 is about 342.6772939687.

The spelling of 40239816 in words is "forty million, two hundred thirty-nine thousand, eight hundred sixteen".