27974629 has 2 divisors, whose sum is σ = 27974630. Its totient is φ = 27974628.

The previous prime is 27974603. The next prime is 27974633. The reversal of 27974629 is 92647972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24770529 + 3204100 = 4977^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 27974629 - 2¹³ = 27966437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27974689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13987314 + 13987315.

It is an arithmetic number, because the mean of its divisors is an integer number (13987315).

Almost surely, 2^27974629 is an apocalyptic number.

It is an amenable number.

27974629 is a deficient number, since it is larger than the sum of its proper divisors (1).

27974629 is an equidigital number, since it uses as much as digits as its factorization.

27974629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 27974629 is about 5289.1047446614. The cubic root of 27974629 is about 303.5671536402.

The spelling of 27974629 in words is "twenty-seven million, nine hundred seventy-four thousand, six hundred twenty-nine".