3936698989 has 8 divisors (see below), whose sum is σ = 4139210520. Its totient is φ = 3738638400.

The previous prime is 3936698971. The next prime is 3936699001. The reversal of 3936698989 is 9898966393.

3936698989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101002500 + 3835696489 = 10050^2 + 61933^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3936698989 - 2⁵ = 3936698957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3936698489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110922 + ... + 1114459.

It is an arithmetic number, because the mean of its divisors is an integer number (517401315).

Almost surely, 2^3936698989 is an apocalyptic number.

It is an amenable number.

3936698989 is a deficient number, since it is larger than the sum of its proper divisors (202511531).

3936698989 is a wasteful number, since it uses less digits than its factorization.

3936698989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225471.

The product of its digits is 136048896, while the sum is 70.

The square root of 3936698989 is about 62743.1190569930. The cubic root of 3936698989 is about 1578.9828133476.

The spelling of 3936698989 in words is "three billion, nine hundred thirty-six million, six hundred ninety-eight thousand, nine hundred eighty-nine".