4291287 has 32 divisors (see below), whose sum is σ = 7687680. Its totient is φ = 2056320.

The previous prime is 4291267. The next prime is 4291291. The reversal of 4291287 is 7821924.

It is a happy number.

It is not a de Polignac number, because 4291287 - 2⁸ = 4291031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

4291287 is a modest number, since divided by 1287 gives 429 as remainder.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4291267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2289 + ... + 3717.

It is an arithmetic number, because the mean of its divisors is an integer number (240240).

Almost surely, 2^4291287 is an apocalyptic number.

4291287 is a deficient number, since it is larger than the sum of its proper divisors (3396393).

4291287 is a wasteful number, since it uses less digits than its factorization.

4291287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its digits is 8064, while the sum is 33.

The square root of 4291287 is about 2071.5421791506. The cubic root of 4291287 is about 162.5034255688.

The spelling of 4291287 in words is "four million, two hundred ninety-one thousand, two hundred eighty-seven".