2491347 has 4 divisors (see below), whose sum is σ = 3321800. Its totient is φ = 1660896.

The previous prime is 2491343. The next prime is 2491351. The reversal of 2491347 is 7431942.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2491343) and next prime (2491351).

It is not a de Polignac number, because 2491347 - 2² = 2491343 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491343) 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, 415222 + ... + 415227.

It is an arithmetic number, because the mean of its divisors is an integer number (830450).

2^2491347 is an apocalyptic number.

2491347 is a deficient number, since it is larger than the sum of its proper divisors (830453).

2491347 is an equidigital number, since it uses as much as digits as its factorization.

2491347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830452.

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

The square root of 2491347 is about 1578.4001393816. The cubic root of 2491347 is about 135.5641141192.

It can be divided in two parts, 249 and 1347, that added together give a triangular number (1596 = T₅₆).

The spelling of 2491347 in words is "two million, four hundred ninety-one thousand, three hundred forty-seven".