27427739 has 2 divisors, whose sum is σ = 27427740. Its totient is φ = 27427738.

The previous prime is 27427733. The next prime is 27427759. The reversal of 27427739 is 93772472.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27427739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27427696 and 27427705.

It is not a weakly prime, because it can be changed into another prime (27427733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13713869 + 13713870.

It is an arithmetic number, because the mean of its divisors is an integer number (13713870).

Almost surely, 2^27427739 is an apocalyptic number.

27427739 is a deficient number, since it is larger than the sum of its proper divisors (1).

27427739 is an equidigital number, since it uses as much as digits as its factorization.

27427739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 41.

The square root of 27427739 is about 5237.1498928329. The cubic root of 27427739 is about 301.5759255515.

The spelling of 27427739 in words is "twenty-seven million, four hundred twenty-seven thousand, seven hundred thirty-nine".