2240347921 has 4 divisors (see below), whose sum is σ = 2560397632. Its totient is φ = 1920298212.

The previous prime is 2240347909. The next prime is 2240347927. The reversal of 2240347921 is 1297430422.

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 not a de Polignac number, because 2240347921 - 2⁹ = 2240347409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240347927) 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, 160024845 + ... + 160024858.

It is an arithmetic number, because the mean of its divisors is an integer number (640099408).

Almost surely, 2^2240347921 is an apocalyptic number.

It is an amenable number.

2240347921 is a deficient number, since it is larger than the sum of its proper divisors (320049711).

2240347921 is an equidigital number, since it uses as much as digits as its factorization.

2240347921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320049710.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 2240347921 is about 47332.3137085015. The cubic root of 2240347921 is about 1308.4942629888.

The spelling of 2240347921 in words is "two billion, two hundred forty million, three hundred forty-seven thousand, nine hundred twenty-one".