40093656 has 16 divisors (see below), whose sum is σ = 100234200. Its totient is φ = 13364544.

The previous prime is 40093639. The next prime is 40093657. The reversal of 40093656 is 65639004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40093657) 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, 835261 + ... + 835308.

Almost surely, 2^40093656 is an apocalyptic number.

It is an amenable number.

40093656 is an abundant number, since it is smaller than the sum of its proper divisors (60140544).

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

40093656 is a wasteful number, since it uses less digits than its factorization.

40093656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670578 (or 1670574 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 40093656 is about 6331.9551482935. The cubic root of 40093656 is about 342.2618971324.

The spelling of 40093656 in words is "forty million, ninety-three thousand, six hundred fifty-six".