2249690 has 8 divisors (see below), whose sum is σ = 4049460. Its totient is φ = 899872.

The previous prime is 2249633. The next prime is 2249693. The reversal of 2249690 is 969422.

2249690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2163841 + 85849 = 1471^2 + 293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2249690² = 10122210192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2249693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112475 + ... + 112494.

2^2249690 is an apocalyptic number.

2249690 is a deficient number, since it is larger than the sum of its proper divisors (1799770).

2249690 is a wasteful number, since it uses less digits than its factorization.

2249690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224976.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2249690 is about 1499.8966631072. The cubic root of 2249690 is about 131.0310514353.

The spelling of 2249690 in words is "two million, two hundred forty-nine thousand, six hundred ninety".