40890885 has 16 divisors (see below), whose sum is σ = 74772096. Its totient is φ = 18692928.

The previous prime is 40890859. The next prime is 40890887. The reversal of 40890885 is 58809804.

It is not a de Polignac number, because 40890885 - 2⁵ = 40890853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40890887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194614 + ... + 194823.

It is an arithmetic number, because the mean of its divisors is an integer number (4673256).

Almost surely, 2^40890885 is an apocalyptic number.

It is an amenable number.

40890885 is a deficient number, since it is larger than the sum of its proper divisors (33881211).

40890885 is a wasteful number, since it uses less digits than its factorization.

40890885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389452.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 40890885 is about 6394.5981109058. The cubic root of 40890885 is about 344.5155561544.

The spelling of 40890885 in words is "forty million, eight hundred ninety thousand, eight hundred eighty-five".