4891439 has 8 divisors (see below), whose sum is σ = 5658240. Its totient is φ = 4141656.

The previous prime is 4891429. The next prime is 4891457. The reversal of 4891439 is 9341984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4891439 - 2¹² = 4887343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629 + ... + 4790.

It is an arithmetic number, because the mean of its divisors is an integer number (707280).

Almost surely, 2^4891439 is an apocalyptic number.

4891439 is a deficient number, since it is larger than the sum of its proper divisors (766801).

4891439 is an equidigital number, since it uses as much as digits as its factorization.

4891439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509.

The product of its digits is 31104, while the sum is 38.

The square root of 4891439 is about 2211.6597839632. The cubic root of 4891439 is about 169.7509501994.

The spelling of 4891439 in words is "four million, eight hundred ninety-one thousand, four hundred thirty-nine".