27974399 has 2 divisors, whose sum is σ = 27974400. Its totient is φ = 27974398.

The previous prime is 27974389. The next prime is 27974449. The reversal of 27974399 is 99347972.

It is an a-pointer prime, because the next prime (27974449) can be obtained adding 27974399 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27974399 - 2⁸ = 27974143 is a prime.

It is a super-2 number, since 2×27974399² = 1565133998822402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27974389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13987199 + 13987200.

It is an arithmetic number, because the mean of its divisors is an integer number (13987200).

Almost surely, 2^27974399 is an apocalyptic number.

27974399 is a deficient number, since it is larger than the sum of its proper divisors (1).

27974399 is an equidigital number, since it uses as much as digits as its factorization.

27974399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 50.

The square root of 27974399 is about 5289.0830018066. The cubic root of 27974399 is about 303.5663216884.

The spelling of 27974399 in words is "twenty-seven million, nine hundred seventy-four thousand, three hundred ninety-nine".