27469989 has 16 divisors (see below), whose sum is σ = 42100800. Its totient is φ = 17681328.

The previous prime is 27469979. The next prime is 27469993. The reversal of 27469989 is 98996472.

It is not a de Polignac number, because 27469989 - 2⁷ = 27469861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27469919) 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 15 ways as a sum of consecutive naturals, for example, 16759 + ... + 18324.

It is an arithmetic number, because the mean of its divisors is an integer number (2631300).

Almost surely, 2^27469989 is an apocalyptic number.

27469989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27469989 is a deficient number, since it is larger than the sum of its proper divisors (14630811).

27469989 is a wasteful number, since it uses less digits than its factorization.

27469989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35121 (or 35115 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 27469989 is about 5241.1820231700. The cubic root of 27469989 is about 301.7306964330.

The spelling of 27469989 in words is "twenty-seven million, four hundred sixty-nine thousand, nine hundred eighty-nine".