2499947 has 2 divisors, whose sum is σ = 2499948. Its totient is φ = 2499946.

The previous prime is 2499943. The next prime is 2499949. The reversal of 2499947 is 7499942.

2499947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2499947 - 2² = 2499943 is a prime.

Together with 2499949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2499898 and 2499907.

It is not a weakly prime, because it can be changed into another prime (2499941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249973 + 1249974.

It is an arithmetic number, because the mean of its divisors is an integer number (1249974).

2^2499947 is an apocalyptic number.

2499947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2499947 is an equidigital number, since it uses as much as digits as its factorization.

2499947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 2499947 is about 1581.1220699238. The cubic root of 2499947 is about 135.7199217287.

The spelling of 2499947 in words is "two million, four hundred ninety-nine thousand, nine hundred forty-seven".