4677991 has 2 divisors, whose sum is σ = 4677992. Its totient is φ = 4677990.

The previous prime is 4677989. The next prime is 4678031. The reversal of 4677991 is 1997764.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4677991 - 2¹ = 4677989 is a prime.

Together with 4677989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4677191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2338995 + 2338996.

It is an arithmetic number, because the mean of its divisors is an integer number (2338996).

Almost surely, 2^4677991 is an apocalyptic number.

4677991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4677991 is an equidigital number, since it uses as much as digits as its factorization.

4677991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 43.

The square root of 4677991 is about 2162.8663851473. The cubic root of 4677991 is about 167.2449940148.

The spelling of 4677991 in words is "four million, six hundred seventy-seven thousand, nine hundred ninety-one".