4199921 has 8 divisors (see below), whose sum is σ = 4610304. Its totient is φ = 3794320.

The previous prime is 4199903. The next prime is 4199927. The reversal of 4199921 is 1299914.

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 4199921 - 2¹⁴ = 4183537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4199927) 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, 800 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (576288).

Almost surely, 2^4199921 is an apocalyptic number.

It is an amenable number.

4199921 is a deficient number, since it is larger than the sum of its proper divisors (410383).

4199921 is a wasteful number, since it uses less digits than its factorization.

4199921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its digits is 5832, while the sum is 35.

The square root of 4199921 is about 2049.3708790748. The cubic root of 4199921 is about 161.3418530020.

The spelling of 4199921 in words is "four million, one hundred ninety-nine thousand, nine hundred twenty-one".