27942229 has 4 divisors (see below), whose sum is σ = 31933984. Its totient is φ = 23950476.

The previous prime is 27942193. The next prime is 27942241. The reversal of 27942229 is 92224972.

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 27942229 - 2⁹ = 27941717 is a prime.

It is a super-2 number, since 2×27942229² = 1561536322976882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27942269) 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, 1995867 + ... + 1995880.

It is an arithmetic number, because the mean of its divisors is an integer number (7983496).

Almost surely, 2^27942229 is an apocalyptic number.

It is an amenable number.

27942229 is a deficient number, since it is larger than the sum of its proper divisors (3991755).

27942229 is an equidigital number, since it uses as much as digits as its factorization.

27942229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991754.

The product of its digits is 36288, while the sum is 37.

The square root of 27942229 is about 5286.0409570869. The cubic root of 27942229 is about 303.4499119855.

The spelling of 27942229 in words is "twenty-seven million, nine hundred forty-two thousand, two hundred twenty-nine".