8540838772 has 12 divisors (see below), whose sum is σ = 15078738276. Its totient is φ = 4232627840.

The previous prime is 8540838767. The next prime is 8540838841. The reversal of 8540838772 is 2778380458.

It can be written as a sum of positive squares in 2 ways, for example, as 3668240356 + 4872598416 = 60566^2 + 69804^2 .

It is a congruent number.

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, 9447379 + ... + 9448282.

It is an arithmetic number, because the mean of its divisors is an integer number (1256561523).

Almost surely, 2^8540838772 is an apocalyptic number.

It is an amenable number.

8540838772 is a deficient number, since it is larger than the sum of its proper divisors (6537899504).

8540838772 is a wasteful number, since it uses less digits than its factorization.

8540838772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18895778 (or 18895776 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The square root of 8540838772 is about 92416.6585199876. The cubic root of 8540838772 is about 2044.0907575328.

The spelling of 8540838772 in words is "eight billion, five hundred forty million, eight hundred thirty-eight thousand, seven hundred seventy-two".