4287691 has 4 divisors (see below), whose sum is σ = 4331992. Its totient is φ = 4243392.

The previous prime is 4287677. The next prime is 4287719. The reversal of 4287691 is 1967824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4287691 - 2¹¹ = 4285643 is a prime.

It is a super-2 number, since 2×4287691² = 36768588222962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4287691.

It is not an unprimeable number, because it can be changed into a prime (4287601) 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 in 3 ways as a sum of consecutive naturals, for example, 22005 + ... + 22198.

It is an arithmetic number, because the mean of its divisors is an integer number (1082998).

Almost surely, 2^4287691 is an apocalyptic number.

4287691 is a deficient number, since it is larger than the sum of its proper divisors (44301).

4287691 is an equidigital number, since it uses as much as digits as its factorization.

4287691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44300.

The product of its digits is 24192, while the sum is 37.

The square root of 4287691 is about 2070.6740448463. The cubic root of 4287691 is about 162.4580215038.

The spelling of 4287691 in words is "four million, two hundred eighty-seven thousand, six hundred ninety-one".