39974647993 has 8 divisors (see below), whose sum is σ = 45686834240. Its totient is φ = 34262842320.

The previous prime is 39974647913. The next prime is 39974647997.

39974647993 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 39974647993 - 2¹⁷ = 39974516921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39974647997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184903 + ... + 337843.

It is an arithmetic number, because the mean of its divisors is an integer number (5710854280).

Almost surely, 2^39974647993 is an apocalyptic number.

It is an amenable number.

39974647993 is a deficient number, since it is larger than the sum of its proper divisors (5712186247).

39974647993 is a wasteful number, since it uses less digits than its factorization.

39974647993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190287.

The product of its digits is 277766496, while the sum is 70.

The spelling of 39974647993 in words is "thirty-nine billion, nine hundred seventy-four million, six hundred forty-seven thousand, nine hundred ninety-three".