4866991 has 4 divisors (see below), whose sum is σ = 4970592. Its totient is φ = 4763392.

The previous prime is 4866989. The next prime is 4866997. The reversal of 4866991 is 1996684.

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

It is a cyclic number.

It is not a de Polignac number, because 4866991 - 2¹ = 4866989 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4866997) 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, 51730 + ... + 51823.

It is an arithmetic number, because the mean of its divisors is an integer number (1242648).

Almost surely, 2^4866991 is an apocalyptic number.

4866991 is a deficient number, since it is larger than the sum of its proper divisors (103601).

4866991 is a wasteful number, since it uses less digits than its factorization.

4866991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103600.

The product of its digits is 93312, while the sum is 43.

The square root of 4866991 is about 2206.1257897047. The cubic root of 4866991 is about 169.4676658272.

The spelling of 4866991 in words is "four million, eight hundred sixty-six thousand, nine hundred ninety-one".