3989121412 has 6 divisors (see below), whose sum is σ = 6980962478. Its totient is φ = 1994560704.

The previous prime is 3989121397. The next prime is 3989121503. The reversal of 3989121412 is 2141219893.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3151250496 + 837870916 = 56136^2 + 28946^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498640173 + ... + 498640180.

Almost surely, 2^3989121412 is an apocalyptic number.

It is an amenable number.

3989121412 is a deficient number, since it is larger than the sum of its proper divisors (2991841066).

3989121412 is a wasteful number, since it uses less digits than its factorization.

3989121412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997280357 (or 997280355 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 3989121412 is about 63159.4918598939. The cubic root of 3989121412 is about 1585.9606885817.

The spelling of 3989121412 in words is "three billion, nine hundred eighty-nine million, one hundred twenty-one thousand, four hundred twelve".