2049539 has 4 divisors (see below), whose sum is σ = 2083200. Its totient is φ = 2015880.

The previous prime is 2049533. The next prime is 2049547. The reversal of 2049539 is 9359402.

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-2049539 is a prime.

It is a super-2 number, since 2×2049539² = 8401220225042, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049533) 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, 16739 + ... + 16860.

It is an arithmetic number, because the mean of its divisors is an integer number (520800).

2^2049539 is an apocalyptic number.

2049539 is a deficient number, since it is larger than the sum of its proper divisors (33661).

2049539 is an equidigital number, since it uses as much as digits as its factorization.

2049539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33660.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2049539 is about 1431.6211090928. The cubic root of 2049539 is about 127.0238862216.

The spelling of 2049539 in words is "two million, forty-nine thousand, five hundred thirty-nine".