27964429 has 2 divisors, whose sum is σ = 27964430. Its totient is φ = 27964428.

The previous prime is 27964403. The next prime is 27964441. The reversal of 27964429 is 92446972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21178404 + 6786025 = 4602^2 + 2605^2 .

It is a cyclic number.

It is not a de Polignac number, because 27964429 - 2⁷ = 27964301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27961429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13982214 + 13982215.

It is an arithmetic number, because the mean of its divisors is an integer number (13982215).

Almost surely, 2^27964429 is an apocalyptic number.

It is an amenable number.

27964429 is a deficient number, since it is larger than the sum of its proper divisors (1).

27964429 is an equidigital number, since it uses as much as digits as its factorization.

27964429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 27964429 is about 5288.1404103900. The cubic root of 27964429 is about 303.5302539984.

It can be divided in two parts, 2796 and 4429, that added together give a square (7225 = 85²).

The spelling of 27964429 in words is "twenty-seven million, nine hundred sixty-four thousand, four hundred twenty-nine".