40716993 has 8 divisors (see below), whose sum is σ = 55444608. Its totient is φ = 26567024.

The previous prime is 40716947. The next prime is 40717007. The reversal of 40716993 is 39961704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40716993 - 2⁸ = 40716737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40716913) 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, 144246 + ... + 144527.

It is an arithmetic number, because the mean of its divisors is an integer number (6930576).

Almost surely, 2^40716993 is an apocalyptic number.

It is an amenable number.

40716993 is a deficient number, since it is larger than the sum of its proper divisors (14727615).

40716993 is a wasteful number, since it uses less digits than its factorization.

40716993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288823.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 40716993 is about 6380.9868359056. The cubic root of 40716993 is about 344.0265015864.

The spelling of 40716993 in words is "forty million, seven hundred sixteen thousand, nine hundred ninety-three".