40436690 has 16 divisors (see below), whose sum is σ = 83184192. Its totient is φ = 13863984.

The previous prime is 40436689. The next prime is 40436699. The reversal of 40436690 is 9663404.

It is a super-2 number, since 2×40436690² = 3270251796312200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40436699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288764 + ... + 288903.

It is an arithmetic number, because the mean of its divisors is an integer number (5199012).

Almost surely, 2^40436690 is an apocalyptic number.

40436690 is an abundant number, since it is smaller than the sum of its proper divisors (42747502).

40436690 is a wasteful number, since it uses less digits than its factorization.

40436690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577681.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40436690 is about 6358.9849818977. The cubic root of 40436690 is about 343.2352365822.

The spelling of 40436690 in words is "forty million, four hundred thirty-six thousand, six hundred ninety".