3989618696278 has 8 divisors (see below), whose sum is σ = 6123600789768. Its totient is φ = 1948418433024.

The previous prime is 3989618696251. The next prime is 3989618696309. The reversal of 3989618696278 is 8726968169893.

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

It is a super-2 number, since 2×3989618696278² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23195457451 + ... + 23195457622.

It is an arithmetic number, because the mean of its divisors is an integer number (765450098721).

Almost surely, 2^{3989618696278} is an apocalyptic number.

3989618696278 is a deficient number, since it is larger than the sum of its proper divisors (2133982093490).

3989618696278 is a wasteful number, since it uses less digits than its factorization.

3989618696278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46390915118.

The product of its digits is 3386105856, while the sum is 82.

The spelling of 3989618696278 in words is "three trillion, nine hundred eighty-nine billion, six hundred eighteen million, six hundred ninety-six thousand, two hundred seventy-eight".