2149907 has 4 divisors (see below), whose sum is σ = 2263080. Its totient is φ = 2036736.

The previous prime is 2149897. The next prime is 2149909. The reversal of 2149907 is 7099412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2149907 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 56558 + ... + 56595.

It is an arithmetic number, because the mean of its divisors is an integer number (565770).

2^2149907 is an apocalyptic number.

2149907 is a deficient number, since it is larger than the sum of its proper divisors (113173).

2149907 is a wasteful number, since it uses less digits than its factorization.

2149907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113172.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2149907 is about 1466.2561167818. The cubic root of 2149907 is about 129.0644270848.

The spelling of 2149907 in words is "two million, one hundred forty-nine thousand, nine hundred seven".