2190049 has 4 divisors (see below), whose sum is σ = 2201364. Its totient is φ = 2178736.

The previous prime is 2190047. The next prime is 2190077. The reversal of 2190049 is 9400912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1306449 + 883600 = 1143^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190049 - 2¹ = 2190047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2190043) 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, 5362 + ... + 5755.

It is an arithmetic number, because the mean of its divisors is an integer number (550341).

2^2190049 is an apocalyptic number.

It is an amenable number.

2190049 is a deficient number, since it is larger than the sum of its proper divisors (11315).

2190049 is a wasteful number, since it uses less digits than its factorization.

2190049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11314.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2190049 is about 1479.8814141680. The cubic root of 2190049 is about 129.8627545646.

The spelling of 2190049 in words is "two million, one hundred ninety thousand, forty-nine".