2238491 has 2 divisors, whose sum is σ = 2238492. Its totient is φ = 2238490.

The previous prime is 2238487. The next prime is 2238527. The reversal of 2238491 is 1948322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2238491 - 2² = 2238487 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2238421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119245 + 1119246.

It is an arithmetic number, because the mean of its divisors is an integer number (1119246).

2^2238491 is an apocalyptic number.

2238491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238491 is an equidigital number, since it uses as much as digits as its factorization.

2238491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 2238491 is about 1496.1587482617. The cubic root of 2238491 is about 130.8132646225.

The spelling of 2238491 in words is "two million, two hundred thirty-eight thousand, four hundred ninety-one".