27295989 has 48 divisors (see below), whose sum is σ = 46238400. Its totient is φ = 14224896.

The previous prime is 27295987. The next prime is 27295991. The reversal of 27295989 is 98959272.

It is an interprime number because it is at equal distance from previous prime (27295987) and next prime (27295991).

It is not a de Polignac number, because 27295989 - 2¹ = 27295987 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27295987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80829 + ... + 81165.

It is an arithmetic number, because the mean of its divisors is an integer number (963300).

Almost surely, 2^27295989 is an apocalyptic number.

27295989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

27295989 is the 2793-rd nonagonal number.

It is an amenable number.

27295989 is a deficient number, since it is larger than the sum of its proper divisors (18942411).

27295989 is a wasteful number, since it uses less digits than its factorization.

27295989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 395 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 27295989 is about 5224.5563448010. The cubic root of 27295989 is about 301.0922738552.

The spelling of 27295989 in words is "twenty-seven million, two hundred ninety-five thousand, nine hundred eighty-nine".