4143691 has 6 divisors (see below), whose sum is σ = 4371140. Its totient is φ = 3917196.

The previous prime is 4143683. The next prime is 4143697. The reversal of 4143691 is 1963414.

It is not a de Polignac number, because 4143691 - 2³ = 4143683 is a prime.

4143691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4143697) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8640 + ... + 9106.

Almost surely, 2^4143691 is an apocalyptic number.

4143691 is a deficient number, since it is larger than the sum of its proper divisors (227449).

4143691 is an frugal number, since it uses more digits than its factorization.

4143691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 486 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 4143691 is about 2035.6058066335. The cubic root of 4143691 is about 160.6185819578.

The spelling of 4143691 in words is "four million, one hundred forty-three thousand, six hundred ninety-one".