2472749 has 4 divisors (see below), whose sum is σ = 2514720. Its totient is φ = 2430780.

The previous prime is 2472737. The next prime is 2472781. The reversal of 2472749 is 9472742.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2472749 is a prime.

It is a super-2 number, since 2×2472749² = 12228975234002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2472719) 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, 20897 + ... + 21014.

It is an arithmetic number, because the mean of its divisors is an integer number (628680).

2^2472749 is an apocalyptic number.

It is an amenable number.

2472749 is a deficient number, since it is larger than the sum of its proper divisors (41971).

2472749 is an equidigital number, since it uses as much as digits as its factorization.

2472749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41970.

The product of its digits is 28224, while the sum is 35.

The square root of 2472749 is about 1572.4976947519. The cubic root of 2472749 is about 135.2259408051.

The spelling of 2472749 in words is "two million, four hundred seventy-two thousand, seven hundred forty-nine".