2199447 has 24 divisors (see below), whose sum is σ = 3435600. Its totient is φ = 1389024.

The previous prime is 2199433. The next prime is 2199479. The reversal of 2199447 is 7449912.

It is not a de Polignac number, because 2199447 - 2¹² = 2195351 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (18144) is a multiple of the sum of its prime factors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41473 + ... + 41525.

It is an arithmetic number, because the mean of its divisors is an integer number (143150).

2^2199447 is an apocalyptic number.

2199447 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2199447 is a deficient number, since it is larger than the sum of its proper divisors (1236153).

2199447 is an equidigital number, since it uses as much as digits as its factorization.

2199447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 85 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2199447 is about 1483.0532694411. The cubic root of 2199447 is about 130.0482463921.

The spelling of 2199447 in words is "two million, one hundred ninety-nine thousand, four hundred forty-seven".