8140427860 has 12 divisors (see below), whose sum is σ = 17094898548. Its totient is φ = 3256171136.

The previous prime is 8140427851. The next prime is 8140427873. The reversal of 8140427860 is 687240418.

It can be written as a sum of positive squares in 2 ways, for example, as 6068721604 + 2071706256 = 77902^2 + 45516^2 .

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, 203510677 + ... + 203510716.

It is an arithmetic number, because the mean of its divisors is an integer number (1424574879).

Almost surely, 2^8140427860 is an apocalyptic number.

It is an amenable number.

8140427860 is an abundant number, since it is smaller than the sum of its proper divisors (8954470688).

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

8140427860 is a wasteful number, since it uses less digits than its factorization.

8140427860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407021402 (or 407021400 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 8140427860 is about 90224.3196704747. The cubic root of 8140427860 is about 2011.6345095217.

The spelling of 8140427860 in words is "eight billion, one hundred forty million, four hundred twenty-seven thousand, eight hundred sixty".