40499290 has 16 divisors (see below), whose sum is σ = 78506568. Its totient is φ = 14953536.

The previous prime is 40499233. The next prime is 40499309. The reversal of 40499290 is 9299404.

It can be written as a sum of positive squares in 4 ways, for example, as 37197801 + 3301489 = 6099^2 + 1817^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155637 + ... + 155896.

Almost surely, 2^40499290 is an apocalyptic number.

40499290 is a deficient number, since it is larger than the sum of its proper divisors (38007278).

40499290 is a wasteful number, since it uses less digits than its factorization.

40499290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311553.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 40499290 is about 6363.9052475662. The cubic root of 40499290 is about 343.4122659713.

The spelling of 40499290 in words is "forty million, four hundred ninety-nine thousand, two hundred ninety".