3977898125 has 10 divisors (see below), whose sum is σ = 4970782278. Its totient is φ = 3182318000.

The previous prime is 3977898109. The next prime is 3977898151. The reversal of 3977898125 is 5218987793.

It can be written as a sum of positive squares in 5 ways, for example, as 1804380484 + 2173517641 = 42478^2 + 46621^2 .

It is not a de Polignac number, because 3977898125 - 2⁴ = 3977898109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 3181694 + ... + 3182943.

Almost surely, 2^3977898125 is an apocalyptic number.

It is an amenable number.

3977898125 is a deficient number, since it is larger than the sum of its proper divisors (992884153).

3977898125 is an frugal number, since it uses more digits than its factorization.

3977898125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364657 (or 6364642 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 59.

The square root of 3977898125 is about 63070.5805031157. The cubic root of 3977898125 is about 1584.4719387823.

The spelling of 3977898125 in words is "three billion, nine hundred seventy-seven million, eight hundred ninety-eight thousand, one hundred twenty-five".