2492309 has 4 divisors (see below), whose sum is σ = 2495616. Its totient is φ = 2489004.

The previous prime is 2492299. The next prime is 2492311. The reversal of 2492309 is 9032942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2492309 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 (2492339) 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, 92 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (623904).

2^2492309 is an apocalyptic number.

It is an amenable number.

2492309 is a deficient number, since it is larger than the sum of its proper divisors (3307).

2492309 is a wasteful number, since it uses less digits than its factorization.

2492309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2492309 is about 1578.7048489189. The cubic root of 2492309 is about 135.5815606244.

The spelling of 2492309 in words is "two million, four hundred ninety-two thousand, three hundred nine".