3869294644 has 24 divisors (see below), whose sum is σ = 6838896680. Its totient is φ = 1915353216.

The previous prime is 3869294603. The next prime is 3869294659. The reversal of 3869294644 is 4464929683.

It can be written as a sum of positive squares in 4 ways, for example, as 1251744400 + 2617550244 = 35380^2 + 51162^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693514 + ... + 699070.

Almost surely, 2^3869294644 is an apocalyptic number.

It is an amenable number.

3869294644 is a deficient number, since it is larger than the sum of its proper divisors (2969602036).

3869294644 is a wasteful number, since it uses less digits than its factorization.

3869294644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7267 (or 7265 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 55.

The square root of 3869294644 is about 62203.6545871704. The cubic root of 3869294644 is about 1569.9190789563.

The spelling of 3869294644 in words is "three billion, eight hundred sixty-nine million, two hundred ninety-four thousand, six hundred forty-four".