2198399290 has 12 divisors (see below), whose sum is σ = 3957385626. Its totient is φ = 879300408.

The previous prime is 2198399279. The next prime is 2198399297. The reversal of 2198399290 is 929938912.

It can be written as a sum of positive squares in only one way, i.e., 1978559361 + 219839929 = 44481^2 + 14827^2 .

It is not an unprimeable number, because it can be changed into a prime (2198399297) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 140857 + ... + 155683.

Almost surely, 2^2198399290 is an apocalyptic number.

2198399290 is a deficient number, since it is larger than the sum of its proper divisors (1758986336).

2198399290 is an frugal number, since it uses more digits than its factorization.

2198399290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29661 (or 14834 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 2198399290 is about 46887.0908673166. The cubic root of 2198399290 is about 1300.2759355092.

The spelling of 2198399290 in words is "two billion, one hundred ninety-eight million, three hundred ninety-nine thousand, two hundred ninety".