2499729 has 8 divisors (see below), whose sum is σ = 3414432. Its totient is φ = 1625760.

The previous prime is 2499727. The next prime is 2499751. The reversal of 2499729 is 9279942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2499729 - 2¹ = 2499727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2499727) 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, 10039 + ... + 10284.

It is an arithmetic number, because the mean of its divisors is an integer number (426804).

2^2499729 is an apocalyptic number.

It is an amenable number.

2499729 is a deficient number, since it is larger than the sum of its proper divisors (914703).

2499729 is a wasteful number, since it uses less digits than its factorization.

2499729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20367.

The product of its digits is 81648, while the sum is 42.

The square root of 2499729 is about 1581.0531300371. The cubic root of 2499729 is about 135.7159766047.

The spelling of 2499729 in words is "two million, four hundred ninety-nine thousand, seven hundred twenty-nine".