8440532290 has 16 divisors (see below), whose sum is σ = 15401082168. Its totient is φ = 3329963136.

The previous prime is 8440532263. The next prime is 8440532291. The reversal of 8440532290 is 922350448.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5588011009 + 2852521281 = 74753^2 + 53409^2 .

It is not an unprimeable number, because it can be changed into a prime (8440532291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5780457 + ... + 5781916.

Almost surely, 2^8440532290 is an apocalyptic number.

8440532290 is a deficient number, since it is larger than the sum of its proper divisors (6960549878).

8440532290 is a wasteful number, since it uses less digits than its factorization.

8440532290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11562453.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 8440532290 is about 91872.3695677868. The cubic root of 8440532290 is about 2036.0570617966.

The spelling of 8440532290 in words is "eight billion, four hundred forty million, five hundred thirty-two thousand, two hundred ninety".