27400919 has 16 divisors (see below), whose sum is σ = 33859392. Its totient is φ = 21593088.

The previous prime is 27400897. The next prime is 27400921. The reversal of 27400919 is 91900472.

It is a cyclic number.

It is not a de Polignac number, because 27400919 - 2⁸ = 27400663 is a prime.

It is a super-2 number, since 2×27400919² = 1501620724089122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27400939) 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, 31697 + ... + 32549.

It is an arithmetic number, because the mean of its divisors is an integer number (2116212).

Almost surely, 2^27400919 is an apocalyptic number.

27400919 is a deficient number, since it is larger than the sum of its proper divisors (6458473).

27400919 is a wasteful number, since it uses less digits than its factorization.

27400919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 27400919 is about 5234.5887135476. The cubic root of 27400919 is about 301.4775956077.

The spelling of 27400919 in words is "twenty-seven million, four hundred thousand, nine hundred nineteen".