2249739 has 6 divisors (see below), whose sum is σ = 3249636. Its totient is φ = 1499820.

The previous prime is 2249719. The next prime is 2249743. The reversal of 2249739 is 9379422.

It is not a de Polignac number, because 2249739 - 2⁸ = 2249483 is a prime.

It is a super-2 number, since 2×2249739² = 10122651136242, which contains 22 as substring.

2249739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2249719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124977 + ... + 124994.

It is an arithmetic number, because the mean of its divisors is an integer number (541606).

2^2249739 is an apocalyptic number.

2249739 is a deficient number, since it is larger than the sum of its proper divisors (999897).

2249739 is a wasteful number, since it uses less digits than its factorization.

2249739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249977 (or 249974 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 2249739 is about 1499.9129974769. The cubic root of 2249739 is about 131.0320027478.

The spelling of 2249739 in words is "two million, two hundred forty-nine thousand, seven hundred thirty-nine".