40099732 has 12 divisors (see below), whose sum is σ = 70482580. Its totient is φ = 19961856.

The previous prime is 40099729. The next prime is 40099733. The reversal of 40099732 is 23799004.

It can be written as a sum of positive squares in 2 ways, for example, as 17859076 + 22240656 = 4226^2 + 4716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40099733) 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, 20973 + ... + 22804.

Almost surely, 2^40099732 is an apocalyptic number.

It is an amenable number.

40099732 is a deficient number, since it is larger than the sum of its proper divisors (30382848).

40099732 is a wasteful number, since it uses less digits than its factorization.

40099732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44010 (or 44008 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 40099732 is about 6332.4349187339. The cubic root of 40099732 is about 342.2791856385.

The spelling of 40099732 in words is "forty million, ninety-nine thousand, seven hundred thirty-two".