4001129 has 8 divisors (see below), whose sum is σ = 4447872. Its totient is φ = 3568240.

The previous prime is 4001119. The next prime is 4001141. The reversal of 4001129 is 9211004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4001129 - 2²⁰ = 2952553 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4001119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2849 + ... + 4014.

It is an arithmetic number, because the mean of its divisors is an integer number (555984).

Almost surely, 2^4001129 is an apocalyptic number.

It is an amenable number.

4001129 is a deficient number, since it is larger than the sum of its proper divisors (446743).

4001129 is a wasteful number, since it uses less digits than its factorization.

4001129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6927.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 4001129 is about 2000.2822300865. The cubic root of 4001129 is about 158.7550385902.

The spelling of 4001129 in words is "four million, one thousand, one hundred twenty-nine".