2199440788 has 6 divisors (see below), whose sum is σ = 3849021386. Its totient is φ = 1099720392.

The previous prime is 2199440767. The next prime is 2199440791. The reversal of 2199440788 is 8870449912.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1631190544 + 568250244 = 40388^2 + 23838^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274930095 + ... + 274930102.

Almost surely, 2^2199440788 is an apocalyptic number.

It is an amenable number.

2199440788 is a deficient number, since it is larger than the sum of its proper divisors (1649580598).

2199440788 is a wasteful number, since it uses less digits than its factorization.

2199440788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549860201 (or 549860199 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 2199440788 is about 46898.1959994198. The cubic root of 2199440788 is about 1300.4812395822.

The spelling of 2199440788 in words is "two billion, one hundred ninety-nine million, four hundred forty thousand, seven hundred eighty-eight".