27995393 has 4 divisors (see below), whose sum is σ = 29212608. Its totient is φ = 26778180.

The previous prime is 27995381. The next prime is 27995399. The reversal of 27995393 is 39359972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27995393 - 2⁶ = 27995329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27995399) 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 3 ways as a sum of consecutive naturals, for example, 608573 + ... + 608618.

It is an arithmetic number, because the mean of its divisors is an integer number (7303152).

Almost surely, 2^27995393 is an apocalyptic number.

27995393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

27995393 is a deficient number, since it is larger than the sum of its proper divisors (1217215).

27995393 is a wasteful number, since it uses less digits than its factorization.

27995393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217214.

The product of its digits is 459270, while the sum is 47.

The square root of 27995393 is about 5291.0672836395. The cubic root of 27995393 is about 303.6422420296.

It can be divided in two parts, 2799 and 5393, that added together give a 13-th power (8192 = 2¹³).

The spelling of 27995393 in words is "twenty-seven million, nine hundred ninety-five thousand, three hundred ninety-three".