3937196689 has 4 divisors (see below), whose sum is σ = 3946289956. Its totient is φ = 3928103424.

The previous prime is 3937196647. The next prime is 3937196693. The reversal of 3937196689 is 9866917393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1608651664 + 2328545025 = 40108^2 + 48255^2 .

It is a cyclic number.

It is not a de Polignac number, because 3937196689 - 2¹⁷ = 3937065617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3937196609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545984 + ... + 4546849.

It is an arithmetic number, because the mean of its divisors is an integer number (986572489).

Almost surely, 2^3937196689 is an apocalyptic number.

It is an amenable number.

3937196689 is a deficient number, since it is larger than the sum of its proper divisors (9093267).

3937196689 is an equidigital number, since it uses as much as digits as its factorization.

3937196689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9093266.

The product of its digits is 13226976, while the sum is 61.

The square root of 3937196689 is about 62747.0851036126. The cubic root of 3937196689 is about 1579.0493518894.

The spelling of 3937196689 in words is "three billion, nine hundred thirty-seven million, one hundred ninety-six thousand, six hundred eighty-nine".