40649118 has 16 divisors (see below), whose sum is σ = 81770256. Its totient is φ = 13471040.

The previous prime is 40649107. The next prime is 40649123. The reversal of 40649118 is 81194604.

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, 18543 + ... + 20618.

It is an arithmetic number, because the mean of its divisors is an integer number (5110641).

Almost surely, 2^40649118 is an apocalyptic number.

40649118 is an abundant number, since it is smaller than the sum of its proper divisors (41121138).

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

40649118 is a wasteful number, since it uses less digits than its factorization.

40649118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39339.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 40649118 is about 6375.6660828497. Note that the first 3 decimals coincide. The cubic root of 40649118 is about 343.8352318460.

The spelling of 40649118 in words is "forty million, six hundred forty-nine thousand, one hundred eighteen".