4091047 has 2 divisors, whose sum is σ = 4091048. Its totient is φ = 4091046.

The previous prime is 4091011. The next prime is 4091069. The reversal of 4091047 is 7401904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4091047 - 2¹⁵ = 4058279 is a prime.

4091047 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4091947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045523 + 2045524.

It is an arithmetic number, because the mean of its divisors is an integer number (2045524).

Almost surely, 2^4091047 is an apocalyptic number.

4091047 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091047 is an equidigital number, since it uses as much as digits as its factorization.

4091047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 4091047 is about 2022.6336791421. The cubic root of 4091047 is about 159.9354817998.

The spelling of 4091047 in words is "four million, ninety-one thousand, forty-seven".