4144687 has 4 divisors (see below), whose sum is σ = 4206616. Its totient is φ = 4082760.

The previous prime is 4144681. The next prime is 4144711. The reversal of 4144687 is 7864414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7864414 = 2 ⋅3932207.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4144687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30864 + ... + 30997.

It is an arithmetic number, because the mean of its divisors is an integer number (1051654).

Almost surely, 2^4144687 is an apocalyptic number.

4144687 is a deficient number, since it is larger than the sum of its proper divisors (61929).

4144687 is an equidigital number, since it uses as much as digits as its factorization.

4144687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61928.

The product of its digits is 21504, while the sum is 34.

The square root of 4144687 is about 2035.8504365498. The cubic root of 4144687 is about 160.6314499774.

The spelling of 4144687 in words is "four million, one hundred forty-four thousand, six hundred eighty-seven".