39680993 has 8 divisors (see below), whose sum is σ = 43514976. Its totient is φ = 35884800.

The previous prime is 39680969. The next prime is 39680999. The reversal of 39680993 is 39908693.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39680993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39680999) 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, 7223 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (5439372).

Almost surely, 2^39680993 is an apocalyptic number.

It is an amenable number.

39680993 is a deficient number, since it is larger than the sum of its proper divisors (3833983).

39680993 is a wasteful number, since it uses less digits than its factorization.

39680993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18895.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 39680993 is about 6299.2851181702. The cubic root of 39680993 is about 341.0836045125.

The spelling of 39680993 in words is "thirty-nine million, six hundred eighty thousand, nine hundred ninety-three".