27973793 has 2 divisors, whose sum is σ = 27973794. Its totient is φ = 27973792.

The previous prime is 27973763. The next prime is 27973801. The reversal of 27973793 is 39737972.

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., 25684624 + 2289169 = 5068^2 + 1513^2 .

It is a cyclic number.

It is not a de Polignac number, because 27973793 - 2¹⁴ = 27957409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27973703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13986896 + 13986897.

It is an arithmetic number, because the mean of its divisors is an integer number (13986897).

Almost surely, 2^27973793 is an apocalyptic number.

It is an amenable number.

27973793 is a deficient number, since it is larger than the sum of its proper divisors (1).

27973793 is an equidigital number, since it uses as much as digits as its factorization.

27973793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 47.

The square root of 27973793 is about 5289.0257136830. The cubic root of 27973793 is about 303.5641296541.

The spelling of 27973793 in words is "twenty-seven million, nine hundred seventy-three thousand, seven hundred ninety-three".