2149901 has 8 divisors (see below), whose sum is σ = 2355360. Its totient is φ = 1950192.

The previous prime is 2149897. The next prime is 2149909. The reversal of 2149901 is 1099412.

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 2149901 - 2² = 2149897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149909) 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, 635 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (294420).

2^2149901 is an apocalyptic number.

It is an amenable number.

2149901 is a deficient number, since it is larger than the sum of its proper divisors (205459).

2149901 is a wasteful number, since it uses less digits than its factorization.

2149901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875.

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

The square root of 2149901 is about 1466.2540707531. The cubic root of 2149901 is about 129.0643070196.

The spelling of 2149901 in words is "two million, one hundred forty-nine thousand, nine hundred one".