27213899 has 4 divisors (see below), whose sum is σ = 28397136. Its totient is φ = 26030664.

The previous prime is 27213839. The next prime is 27213911. The reversal of 27213899 is 99831272.

It is a happy number.

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

It is not a de Polignac number, because 27213899 - 2¹² = 27209803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27213839) 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, 591584 + ... + 591629.

It is an arithmetic number, because the mean of its divisors is an integer number (7099284).

Almost surely, 2^27213899 is an apocalyptic number.

27213899 is a deficient number, since it is larger than the sum of its proper divisors (1183237).

27213899 is a wasteful number, since it uses less digits than its factorization.

27213899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183236.

The product of its digits is 54432, while the sum is 41.

The square root of 27213899 is about 5216.6942597779. The cubic root of 27213899 is about 300.7901356437.

The spelling of 27213899 in words is "twenty-seven million, two hundred thirteen thousand, eight hundred ninety-nine".