2238791 has 2 divisors, whose sum is σ = 2238792. Its totient is φ = 2238790.

The previous prime is 2238787. The next prime is 2238799. The reversal of 2238791 is 1978322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2238791 - 2² = 2238787 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2238799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119395 + 1119396.

It is an arithmetic number, because the mean of its divisors is an integer number (1119396).

2^2238791 is an apocalyptic number.

2238791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238791 is an equidigital number, since it uses as much as digits as its factorization.

2238791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 2238791 is about 1496.2590016438. The cubic root of 2238791 is about 130.8191081761.

The spelling of 2238791 in words is "two million, two hundred thirty-eight thousand, seven hundred ninety-one".