2139449 has 8 divisors (see below), whose sum is σ = 2318400. Its totient is φ = 1962576.

The previous prime is 2139427. The next prime is 2139461. The reversal of 2139449 is 9449312.

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 a de Polignac number, because none of the positive numbers 2^k-2139449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139409) 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, 2174 + ... + 3000.

It is an arithmetic number, because the mean of its divisors is an integer number (289800).

2^2139449 is an apocalyptic number.

It is an amenable number.

2139449 is a deficient number, since it is larger than the sum of its proper divisors (178951).

2139449 is a wasteful number, since it uses less digits than its factorization.

2139449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its digits is 7776, while the sum is 32.

The square root of 2139449 is about 1462.6855437858. The cubic root of 2139449 is about 128.8548133209.

The spelling of 2139449 in words is "two million, one hundred thirty-nine thousand, four hundred forty-nine".