27859849 has 4 divisors (see below), whose sum is σ = 27870480. Its totient is φ = 27849220.

The previous prime is 27859837. The next prime is 27859879. The reversal of 27859849 is 94895872.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27859849 - 2⁷ = 27859721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27859796 and 27859805.

It is not an unprimeable number, because it can be changed into a prime (27859879) 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, 1722 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (6967620).

Almost surely, 2^27859849 is an apocalyptic number.

It is an amenable number.

27859849 is a deficient number, since it is larger than the sum of its proper divisors (10631).

27859849 is an equidigital number, since it uses as much as digits as its factorization.

27859849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630.

The product of its digits is 1451520, while the sum is 52.

The square root of 27859849 is about 5278.2429841757. The cubic root of 27859849 is about 303.1514054866.

The spelling of 27859849 in words is "twenty-seven million, eight hundred fifty-nine thousand, eight hundred forty-nine".