2242991 has 4 divisors (see below), whose sum is σ = 2246712. Its totient is φ = 2239272.

The previous prime is 2242979. The next prime is 2242993. The reversal of 2242991 is 1992422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1992422 = 2 ⋅996211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2242991 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 4 + 2²¹ + 9 + 9⁴ + 1 .

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2242993) 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, 725 + ... + 2238.

It is an arithmetic number, because the mean of its divisors is an integer number (561678).

2^2242991 is an apocalyptic number.

2242991 is a deficient number, since it is larger than the sum of its proper divisors (3721).

2242991 is an equidigital number, since it uses as much as digits as its factorization.

2242991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720.

The product of its digits is 2592, while the sum is 29.

The square root of 2242991 is about 1497.6618443427. The cubic root of 2242991 is about 130.9008631689.

The spelling of 2242991 in words is "two million, two hundred forty-two thousand, nine hundred ninety-one".