2749431 has 4 divisors (see below), whose sum is σ = 3665912. Its totient is φ = 1832952.

The previous prime is 2749391. The next prime is 2749441. The reversal of 2749431 is 1349472.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2749431 - 2⁷ = 2749303 is a prime.

It is a super-2 number, since 2×2749431² = 15118741647522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749441) 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, 458236 + ... + 458241.

It is an arithmetic number, because the mean of its divisors is an integer number (916478).

2^2749431 is an apocalyptic number.

2749431 is a deficient number, since it is larger than the sum of its proper divisors (916481).

2749431 is an equidigital number, since it uses as much as digits as its factorization.

2749431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916480.

The product of its digits is 6048, while the sum is 30.

The square root of 2749431 is about 1658.1408263474. The cubic root of 2749431 is about 140.0923030761.

The spelling of 2749431 in words is "two million, seven hundred forty-nine thousand, four hundred thirty-one".