4129091 has 4 divisors (see below), whose sum is σ = 4216992. Its totient is φ = 4041192.

The previous prime is 4129087. The next prime is 4129109. The reversal of 4129091 is 1909214.

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 4129091 - 2² = 4129087 is a prime.

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 4129091.

It is not an unprimeable number, because it can be changed into a prime (4129031) 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, 43880 + ... + 43973.

It is an arithmetic number, because the mean of its divisors is an integer number (1054248).

Almost surely, 2^4129091 is an apocalyptic number.

4129091 is a deficient number, since it is larger than the sum of its proper divisors (87901).

4129091 is an equidigital number, since it uses as much as digits as its factorization.

4129091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87900.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 4129091 is about 2032.0164861536. The cubic root of 4129091 is about 160.4297172569.

The spelling of 4129091 in words is "four million, one hundred twenty-nine thousand, ninety-one".