4187291 has 2 divisors, whose sum is σ = 4187292. Its totient is φ = 4187290.

The previous prime is 4187269. The next prime is 4187303. The reversal of 4187291 is 1927814.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4187291 is a prime.

It is not a weakly prime, because it can be changed into another prime (4187251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2093645 + 2093646.

It is an arithmetic number, because the mean of its divisors is an integer number (2093646).

Almost surely, 2^4187291 is an apocalyptic number.

4187291 is a deficient number, since it is larger than the sum of its proper divisors (1).

4187291 is an equidigital number, since it uses as much as digits as its factorization.

4187291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 4187291 is about 2046.2871255032. The cubic root of 4187291 is about 161.1799615711.

The spelling of 4187291 in words is "four million, one hundred eighty-seven thousand, two hundred ninety-one".