40436885 has 8 divisors (see below), whose sum is σ = 48665400. Its totient is φ = 32255424.

The previous prime is 40436867. The next prime is 40436909. The reversal of 40436885 is 58863404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 418609 + 40018276 = 647^2 + 6326^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40436885 - 2⁶ = 40436821 is a prime.

It is a congruent number.

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, 9842 + ... + 13331.

It is an arithmetic number, because the mean of its divisors is an integer number (6083175).

Almost surely, 2^40436885 is an apocalyptic number.

It is an amenable number.

40436885 is a deficient number, since it is larger than the sum of its proper divisors (8228515).

40436885 is a wasteful number, since it uses less digits than its factorization.

40436885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23527.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 40436885 is about 6359.0003145149. Note that the first 3 decimals coincide. The cubic root of 40436885 is about 343.2357883152.

The spelling of 40436885 in words is "forty million, four hundred thirty-six thousand, eight hundred eighty-five".