40985906 has 32 divisors (see below), whose sum is σ = 68952576. Its totient is φ = 18144000.

The previous prime is 40985897. The next prime is 40985909. The reversal of 40985906 is 60958904.

It is not an unprimeable number, because it can be changed into a prime (40985909) 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, 169946 + ... + 170186.

It is an arithmetic number, because the mean of its divisors is an integer number (2154768).

Almost surely, 2^40985906 is an apocalyptic number.

40985906 is a deficient number, since it is larger than the sum of its proper divisors (27966670).

40985906 is a wasteful number, since it uses less digits than its factorization.

40985906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 40985906 is about 6402.0235863358. The cubic root of 40985906 is about 344.7822079866.

The spelling of 40985906 in words is "forty million, nine hundred eighty-five thousand, nine hundred six".