3989658729236 has 6 divisors (see below), whose sum is σ = 6981902776170. Its totient is φ = 1994829364616.

The previous prime is 3989658729197. The next prime is 3989658729281. The reversal of 3989658729236 is 6329278569893.

It can be written as a sum of positive squares in only one way, i.e., 3985788645136 + 3870084100 = 1996444^2 + 62210^2 .

It is a super-2 number, since 2×3989658729236² (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 as a sum of consecutive naturals, namely, 498707341151 + ... + 498707341158.

It is an arithmetic number, because the mean of its divisors is an integer number (1163650462695).

Almost surely, 2^{3989658729236} is an apocalyptic number.

It is an amenable number.

3989658729236 is a deficient number, since it is larger than the sum of its proper divisors (2992244046934).

3989658729236 is a wasteful number, since it uses less digits than its factorization.

3989658729236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997414682313 (or 997414682311 counting only the distinct ones).

The product of its digits is 2116316160, while the sum is 77.

The spelling of 3989658729236 in words is "three trillion, nine hundred eighty-nine billion, six hundred fifty-eight million, seven hundred twenty-nine thousand, two hundred thirty-six".