8440399022 has 16 divisors (see below), whose sum is σ = 13838090544. Its totient is φ = 3829176000.

The previous prime is 8440398991. The next prime is 8440399027. The reversal of 8440399022 is 2209930448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440399027) 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, 356729 + ... + 379652.

It is an arithmetic number, because the mean of its divisors is an integer number (864880659).

Almost surely, 2^8440399022 is an apocalyptic number.

8440399022 is a deficient number, since it is larger than the sum of its proper divisors (5397691522).

8440399022 is a wasteful number, since it uses less digits than its factorization.

8440399022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736915.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 8440399022 is about 91871.6442761313. The cubic root of 8440399022 is about 2036.0463459369.

The spelling of 8440399022 in words is "eight billion, four hundred forty million, three hundred ninety-nine thousand, twenty-two".