27769139 has 4 divisors (see below), whose sum is σ = 27872640. Its totient is φ = 27665640.

The previous prime is 27769123. The next prime is 27769199. The reversal of 27769139 is 93196772.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27769139 - 2⁴ = 27769123 is a prime.

It is a super-2 number, since 2×27769139² = 1542250161602642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27769139.

It is not an unprimeable number, because it can be changed into a prime (27769199) 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, 51347 + ... + 51884.

It is an arithmetic number, because the mean of its divisors is an integer number (6968160).

Almost surely, 2^27769139 is an apocalyptic number.

27769139 is a deficient number, since it is larger than the sum of its proper divisors (103501).

27769139 is a wasteful number, since it uses less digits than its factorization.

27769139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103500.

The product of its digits is 142884, while the sum is 44.

The square root of 27769139 is about 5269.6431567991. The cubic root of 27769139 is about 302.8220334815.

The spelling of 27769139 in words is "twenty-seven million, seven hundred sixty-nine thousand, one hundred thirty-nine".