8139772 has 12 divisors (see below), whose sum is σ = 14265720. Its totient is φ = 4063856.

The previous prime is 8139767. The next prime is 8139773. The reversal of 8139772 is 2779318.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3078 + ... + 5074.

It is an arithmetic number, because the mean of its divisors is an integer number (1188810).

Almost surely, 2^8139772 is an apocalyptic number.

It is an amenable number.

8139772 is a deficient number, since it is larger than the sum of its proper divisors (6125948).

8139772 is a wasteful number, since it uses less digits than its factorization.

8139772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 8139772 is about 2853.0285662783. The cubic root of 8139772 is about 201.1580483449.

It can be divided in two parts, 8139 and 772, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 8139772 in words is "eight million, one hundred thirty-nine thousand, seven hundred seventy-two".