2391937 has 2 divisors, whose sum is σ = 2391938. Its totient is φ = 2391936.

The previous prime is 2391889. The next prime is 2391947. The reversal of 2391937 is 7391932.

2391937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1860496 + 531441 = 1364^2 + 729^2 .

It is a cyclic number.

It is not a de Polignac number, because 2391937 - 2¹¹ = 2389889 is a prime.

It is a super-2 number, since 2×2391937² = 11442725223938, which contains 22 as substring.

2391937 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2391947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195968 + 1195969.

It is an arithmetic number, because the mean of its divisors is an integer number (1195969).

2^2391937 is an apocalyptic number.

It is an amenable number.

2391937 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391937 is an equidigital number, since it uses as much as digits as its factorization.

2391937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

The square root of 2391937 is about 1546.5888270643. The cubic root of 2391937 is about 133.7364874112.

The spelling of 2391937 in words is "two million, three hundred ninety-one thousand, nine hundred thirty-seven".