40985136 has 40 divisors (see below), whose sum is σ = 117643760. Its totient is φ = 13661568.

The previous prime is 40985111. The next prime is 40985137. The reversal of 40985136 is 63158904.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40985136.

It is not an unprimeable number, because it can be changed into a prime (40985137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47005 + ... + 47868.

It is an arithmetic number, because the mean of its divisors is an integer number (2941094).

Almost surely, 2^40985136 is an apocalyptic number.

It is an amenable number.

40985136 is an abundant number, since it is smaller than the sum of its proper divisors (76658624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40985136 is a wasteful number, since it uses less digits than its factorization.

40985136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94890 (or 94878 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 40985136 is about 6401.9634488179. The cubic root of 40985136 is about 344.7800488381.

The spelling of 40985136 in words is "forty million, nine hundred eighty-five thousand, one hundred thirty-six".