4931861 has 4 divisors (see below), whose sum is σ = 5380224. Its totient is φ = 4483500.

The previous prime is 4931837. The next prime is 4931879. The reversal of 4931861 is 1681394.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4931861 - 2¹⁰ = 4930837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4931881) 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, 224165 + ... + 224186.

It is an arithmetic number, because the mean of its divisors is an integer number (1345056).

Almost surely, 2^4931861 is an apocalyptic number.

It is an amenable number.

4931861 is a deficient number, since it is larger than the sum of its proper divisors (448363).

4931861 is a wasteful number, since it uses less digits than its factorization.

4931861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448362.

The product of its digits is 5184, while the sum is 32.

The square root of 4931861 is about 2220.7793676995. The cubic root of 4931861 is about 170.2172654621.

The spelling of 4931861 in words is "four million, nine hundred thirty-one thousand, eight hundred sixty-one".