40289321284 has 9 divisors (see below), whose sum is σ = 70507014781. Its totient is φ = 20144459920.

The previous prime is 40289321273. The next prime is 40289321339. The reversal of 40289321284 is 48212398204.

It is a happy number.

The square root of 40289321284 is 200722.

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

It can be written as a sum of positive squares in only one way, i.e., 4855023684 + 35434297600 = 69678^2 + 188240^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40289321284.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 351264 + ... + 451624.

Almost surely, 2^40289321284 is an apocalyptic number.

40289321284 is the 200722-nd square number.

It is an amenable number.

40289321284 is a deficient number, since it is larger than the sum of its proper divisors (30217693497).

40289321284 is an frugal number, since it uses more digits than its factorization.

40289321284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200726 (or 100363 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 40289321284 in words is "forty billion, two hundred eighty-nine million, three hundred twenty-one thousand, two hundred eighty-four".