27469971 has 12 divisors (see below), whose sum is σ = 40238640. Its totient is φ = 18054960.

The previous prime is 27469927. The next prime is 27469979. The reversal of 27469971 is 17996472.

It is not a de Polignac number, because 27469971 - 2¹⁵ = 27437203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27469979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20856 + ... + 22133.

It is an arithmetic number, because the mean of its divisors is an integer number (3353220).

Almost surely, 2^27469971 is an apocalyptic number.

27469971 is a deficient number, since it is larger than the sum of its proper divisors (12768669).

27469971 is a wasteful number, since it uses less digits than its factorization.

27469971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43066 (or 43063 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 27469971 is about 5241.1803059998. The cubic root of 27469971 is about 301.7306305289.

The spelling of 27469971 in words is "twenty-seven million, four hundred sixty-nine thousand, nine hundred seventy-one".