40199976 has 112 divisors (see below), whose sum is σ = 115879860. Its totient is φ = 13063680.

The previous prime is 40199959. The next prime is 40199977. The reversal of 40199976 is 67999104.

It can be written as a sum of positive squares in 2 ways, for example, as 26316900 + 13883076 = 5130^2 + 3726^2 .

It is not an unprimeable number, because it can be changed into a prime (40199977) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 355696 + ... + 355808.

Almost surely, 2^40199976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40199976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57939930).

40199976 is an abundant number, since it is smaller than the sum of its proper divisors (75679884).

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

40199976 is a wasteful number, since it uses less digits than its factorization.

40199976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 40199976 is about 6340.3451010178. The cubic root of 40199976 is about 342.5641657890.

The spelling of 40199976 in words is "forty million, one hundred ninety-nine thousand, nine hundred seventy-six".