2149919 has 4 divisors (see below), whose sum is σ = 2170896. Its totient is φ = 2128944.

The previous prime is 2149909. The next prime is 2149933. The reversal of 2149919 is 9199412.

2149919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2149919 - 2¹² = 2145823 is a prime.

It is a super-2 number, since 2×2149919² = 9244303413122, which contains 22 as substring.

It is a Duffinian 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10334 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (542724).

2^2149919 is an apocalyptic number.

2149919 is a deficient number, since it is larger than the sum of its proper divisors (20977).

2149919 is a wasteful number, since it uses less digits than its factorization.

2149919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20976.

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

The square root of 2149919 is about 1466.2602088306. The cubic root of 2149919 is about 129.0646672146.

The spelling of 2149919 in words is "two million, one hundred forty-nine thousand, nine hundred nineteen".