27936989 has 8 divisors (see below), whose sum is σ = 28553472. Its totient is φ = 27323920.

The previous prime is 27936977. The next prime is 27936991. The reversal of 27936989 is 98963972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27936989 is a prime.

It is a super-2 number, since 2×27936989² = 1560950708772242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27936989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27936919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22232 + ... + 23454.

It is an arithmetic number, because the mean of its divisors is an integer number (3569184).

Almost surely, 2^27936989 is an apocalyptic number.

It is an amenable number.

27936989 is a deficient number, since it is larger than the sum of its proper divisors (616483).

27936989 is a wasteful number, since it uses less digits than its factorization.

27936989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707.

The product of its digits is 1469664, while the sum is 53.

The square root of 27936989 is about 5285.5452888042. The cubic root of 27936989 is about 303.4309421681.

The spelling of 27936989 in words is "twenty-seven million, nine hundred thirty-six thousand, nine hundred eighty-nine".