40559690 has 16 divisors (see below), whose sum is σ = 75525480. Its totient is φ = 15664320.

The previous prime is 40559689. The next prime is 40559711. The reversal of 40559690 is 9695504.

It can be written as a sum of positive squares in 4 ways, for example, as 24870169 + 15689521 = 4987^2 + 3961^2 .

It is a super-2 number, since 2×40559690² = 3290176905792200, which contains 22 as substring.

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, 69641 + ... + 70220.

Almost surely, 2^40559690 is an apocalyptic number.

40559690 is a deficient number, since it is larger than the sum of its proper divisors (34965790).

40559690 is a wasteful number, since it uses less digits than its factorization.

40559690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139897.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 40559690 is about 6368.6489933109. The cubic root of 40559690 is about 343.5829010443.

The spelling of 40559690 in words is "forty million, five hundred fifty-nine thousand, six hundred ninety".