27439966 has 16 divisors (see below), whose sum is σ = 43473024. Its totient is φ = 12963544.

The previous prime is 27439961. The next prime is 27439999. The reversal of 27439966 is 66993472.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27439961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (2717064).

Almost surely, 2^27439966 is an apocalyptic number.

27439966 is a deficient number, since it is larger than the sum of its proper divisors (16033058).

27439966 is a wasteful number, since it uses less digits than its factorization.

27439966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295.

The product of its digits is 489888, while the sum is 46.

The square root of 27439966 is about 5238.3170961674. The cubic root of 27439966 is about 301.6207320283.

The spelling of 27439966 in words is "twenty-seven million, four hundred thirty-nine thousand, nine hundred sixty-six".