3969886725 has 72 divisors (see below), whose sum is σ = 8299349760. Its totient is φ = 1776159360.

The previous prime is 3969886639. The next prime is 3969886751. The reversal of 3969886725 is 5276889693.

It is a de Polignac number, because none of the positive numbers 2^k-3969886725 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 71 ways as a sum of consecutive naturals, for example, 47211 + ... + 100839.

Almost surely, 2^3969886725 is an apocalyptic number.

3969886725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3969886725 is an abundant number, since it is smaller than the sum of its proper divisors (4329463035).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3969886725 is a wasteful number, since it uses less digits than its factorization.

3969886725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53699 (or 53691 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The square root of 3969886725 is about 63007.0371069772. The cubic root of 3969886725 is about 1583.4075265941.

The spelling of 3969886725 in words is "three billion, nine hundred sixty-nine million, eight hundred eighty-six thousand, seven hundred twenty-five".