8140009284 has 81 divisors (see below), whose sum is σ = 22633299871. Its totient is φ = 2464865040.

The previous prime is 8140009243. The next prime is 8140009291. The reversal of 8140009284 is 4829000418.

The square root of 8140009284 is 90222.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×8140009284² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5953969 + ... + 5955335.

Almost surely, 2^8140009284 is an apocalyptic number.

8140009284 is the 90222-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8140009284

8140009284 is an abundant number, since it is smaller than the sum of its proper divisors (14493290587).

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

8140009284 is a wasteful number, since it uses less digits than its factorization.

8140009284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The cubic root of 8140009284 is about 2011.6000299107.

Multiplying 8140009284 by its sum of digits (36), we get a square (293040334224 = 541332²).

8140009284 divided by its sum of digits (36) gives a square (226111369 = 15037²).

The spelling of 8140009284 in words is "eight billion, one hundred forty million, nine thousand, two hundred eighty-four".