3993712739867 has 4 divisors (see below), whose sum is σ = 4000706983416. Its totient is φ = 3986718496320.

The previous prime is 3993712739831. The next prime is 3993712739899. The reversal of 3993712739867 is 7689372173993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3993712739867 is a prime.

It is a super-2 number, since 2×3993712739867² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3993712739794 and 3993712739803.

It is not an unprimeable number, because it can be changed into a prime (3993712739827) 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, 3497120918 + ... + 3497122059.

It is an arithmetic number, because the mean of its divisors is an integer number (1000176745854).

Almost surely, 2^{3993712739867} is an apocalyptic number.

3993712739867 is a deficient number, since it is larger than the sum of its proper divisors (6994243549).

3993712739867 is an equidigital number, since it uses as much as digits as its factorization.

3993712739867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994243548.

The product of its digits is 648121824, while the sum is 74.

The spelling of 3993712739867 in words is "three trillion, nine hundred ninety-three billion, seven hundred twelve million, seven hundred thirty-nine thousand, eight hundred sixty-seven".