27953389 has 16 divisors (see below), whose sum is σ = 32011200. Its totient is φ = 24240384.

The previous prime is 27953383. The next prime is 27953399. The reversal of 27953389 is 98335972.

It is a cyclic number.

It is not a de Polignac number, because 27953389 - 2³ = 27953381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27953381) 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 15 ways as a sum of consecutive naturals, for example, 10782 + ... + 13120.

It is an arithmetic number, because the mean of its divisors is an integer number (2000700).

Almost surely, 2^27953389 is an apocalyptic number.

It is an amenable number.

27953389 is a deficient number, since it is larger than the sum of its proper divisors (4057811).

27953389 is a wasteful number, since it uses less digits than its factorization.

27953389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412.

The product of its digits is 408240, while the sum is 46.

The square root of 27953389 is about 5287.0964621425. The cubic root of 27953389 is about 303.4903054495.

The spelling of 27953389 in words is "twenty-seven million, nine hundred fifty-three thousand, three hundred eighty-nine".