2199481 has 4 divisors (see below), whose sum is σ = 2270464. Its totient is φ = 2128500.

The previous prime is 2199479. The next prime is 2199499. The reversal of 2199481 is 1849912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2199481 - 2¹ = 2199479 is a prime.

It is a super-2 number, since 2×2199481² = 9675433338722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

2199481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2199401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35445 + ... + 35506.

It is an arithmetic number, because the mean of its divisors is an integer number (567616).

2^2199481 is an apocalyptic number.

It is an amenable number.

2199481 is a deficient number, since it is larger than the sum of its proper divisors (70983).

2199481 is an equidigital number, since it uses as much as digits as its factorization.

2199481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70982.

The product of its digits is 5184, while the sum is 34.

The square root of 2199481 is about 1483.0647322352. The cubic root of 2199481 is about 130.0489165026.

The spelling of 2199481 in words is "two million, one hundred ninety-nine thousand, four hundred eighty-one".