4971947 has 4 divisors (see below), whose sum is σ = 5093256. Its totient is φ = 4850640.

The previous prime is 4971943. The next prime is 4971959. The reversal of 4971947 is 7491794.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7491794 = 2 ⋅3745897.

It is a cyclic number.

It is not a de Polignac number, because 4971947 - 2² = 4971943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 121267 = 4971947 / (4 + 9 + 7 + 1 + 9 + 4 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4971943) 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, 60593 + ... + 60674.

It is an arithmetic number, because the mean of its divisors is an integer number (1273314).

Almost surely, 2^4971947 is an apocalyptic number.

4971947 is a deficient number, since it is larger than the sum of its proper divisors (121309).

4971947 is a wasteful number, since it uses less digits than its factorization.

4971947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121308.

The product of its digits is 63504, while the sum is 41.

The square root of 4971947 is about 2229.7863126318. The cubic root of 4971947 is about 170.6771950055.

The spelling of 4971947 in words is "four million, nine hundred seventy-one thousand, nine hundred forty-seven".