2749487 has 4 divisors (see below), whose sum is σ = 2961000. Its totient is φ = 2537976.

The previous prime is 2749447. The next prime is 2749499. The reversal of 2749487 is 7849472.

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 2749487 - 2⁸ = 2749231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105737 + ... + 105762.

It is an arithmetic number, because the mean of its divisors is an integer number (740250).

2^2749487 is an apocalyptic number.

2749487 is a deficient number, since it is larger than the sum of its proper divisors (211513).

2749487 is a wasteful number, since it uses less digits than its factorization.

2749487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211512.

The product of its digits is 112896, while the sum is 41.

The square root of 2749487 is about 1658.1577126438. The cubic root of 2749487 is about 140.0932541960.

The spelling of 2749487 in words is "two million, seven hundred forty-nine thousand, four hundred eighty-seven".