27908969 has 8 divisors (see below), whose sum is σ = 30583008. Its totient is φ = 25257760.

The previous prime is 27908953. The next prime is 27908977. The reversal of 27908969 is 96980972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27908969 - 2⁴ = 27908953 is a prime.

It is a super-2 number, since 2×27908969² = 1557821101285922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27908669) 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, 3092 + ... + 8085.

It is an arithmetic number, because the mean of its divisors is an integer number (3822876).

Almost surely, 2^27908969 is an apocalyptic number.

It is an amenable number.

27908969 is a deficient number, since it is larger than the sum of its proper divisors (2674039).

27908969 is a wasteful number, since it uses less digits than its factorization.

27908969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 27908969 is about 5282.8939985580. The cubic root of 27908969 is about 303.3294640519.

The spelling of 27908969 in words is "twenty-seven million, nine hundred eight thousand, nine hundred sixty-nine".