3999489067378 has 16 divisors (see below), whose sum is σ = 6857943009984. Its totient is φ = 1713647733840.

The previous prime is 3999489067333. The next prime is 3999489067411. The reversal of 3999489067378 is 8737609849993.

It is a super-2 number, since 2×3999489067378² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34858125 + ... + 34972672.

It is an arithmetic number, because the mean of its divisors is an integer number (428621438124).

Almost surely, 2^{3999489067378} is an apocalyptic number.

3999489067378 is a deficient number, since it is larger than the sum of its proper divisors (2858453942606).

3999489067378 is a wasteful number, since it uses less digits than its factorization.

3999489067378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69834897.

The product of its (nonzero) digits is 4444263936, while the sum is 82.

The spelling of 3999489067378 in words is "three trillion, nine hundred ninety-nine billion, four hundred eighty-nine million, sixty-seven thousand, three hundred seventy-eight".