40649356 has 12 divisors (see below), whose sum is σ = 77603400. Its totient is φ = 18476960.

The previous prime is 40649353. The next prime is 40649381. The reversal of 40649356 is 65394604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40649353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461881 + ... + 461968.

It is an arithmetic number, because the mean of its divisors is an integer number (6466950).

Almost surely, 2^40649356 is an apocalyptic number.

It is an amenable number.

40649356 is a deficient number, since it is larger than the sum of its proper divisors (36954044).

40649356 is a wasteful number, since it uses less digits than its factorization.

40649356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923864 (or 923862 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 40649356 is about 6375.6847475389. The cubic root of 40649356 is about 343.8359028948.

The spelling of 40649356 in words is "forty million, six hundred forty-nine thousand, three hundred fifty-six".