2240399 has 4 divisors (see below), whose sum is σ = 2560464. Its totient is φ = 1920336.

The previous prime is 2240389. The next prime is 2240431. The reversal of 2240399 is 9930422.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2240399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240369) 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, 160022 + ... + 160035.

It is an arithmetic number, because the mean of its divisors is an integer number (640116).

2^2240399 is an apocalyptic number.

2240399 is a deficient number, since it is larger than the sum of its proper divisors (320065).

2240399 is an equidigital number, since it uses as much as digits as its factorization.

2240399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320064.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2240399 is about 1496.7962453186. The cubic root of 2240399 is about 130.8504207288.

The spelling of 2240399 in words is "two million, two hundred forty thousand, three hundred ninety-nine".