3891244752 has 80 divisors (see below), whose sum is σ = 11429119680. Its totient is φ = 1266910848.

The previous prime is 3891244741. The next prime is 3891244757. The reversal of 3891244752 is 2574421983.

It is a junction number, because it is equal to n+sod(n) for n = 3891244698 and 3891244707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891244757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86163 + ... + 123314.

It is an arithmetic number, because the mean of its divisors is an integer number (142863996).

Almost surely, 2^3891244752 is an apocalyptic number.

It is an amenable number.

3891244752 is an abundant number, since it is smaller than the sum of its proper divisors (7537874928).

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

3891244752 is a wasteful number, since it uses less digits than its factorization.

3891244752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209537 (or 209525 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 3891244752 is about 62379.8425134274. The cubic root of 3891244752 is about 1572.8821457530.

The spelling of 3891244752 in words is "three billion, eight hundred ninety-one million, two hundred forty-four thousand, seven hundred fifty-two".