4039772644 has 12 divisors (see below), whose sum is σ = 7071108268. Its totient is φ = 2019456000.

The previous prime is 4039772621. The next prime is 4039772663. The reversal of 4039772644 is 4462779304.

It can be written as a sum of positive squares in 2 ways, for example, as 2724840000 + 1314932644 = 52200^2 + 36262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4039772594 and 4039772603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85977 + ... + 124384.

Almost surely, 2^4039772644 is an apocalyptic number.

It is an amenable number.

4039772644 is a deficient number, since it is larger than the sum of its proper divisors (3031335624).

4039772644 is a wasteful number, since it uses less digits than its factorization.

4039772644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215166 (or 215164 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The square root of 4039772644 is about 63559.2058163096. The cubic root of 4039772644 is about 1592.6449712146.

The spelling of 4039772644 in words is "four billion, thirty-nine million, seven hundred seventy-two thousand, six hundred forty-four".