27700399 has 2 divisors, whose sum is σ = 27700400. Its totient is φ = 27700398.

The previous prime is 27700373. The next prime is 27700403. The reversal of 27700399 is 99300772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27700399 - 2¹⁷ = 27569327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27700369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13850199 + 13850200.

It is an arithmetic number, because the mean of its divisors is an integer number (13850200).

Almost surely, 2^27700399 is an apocalyptic number.

27700399 is a deficient number, since it is larger than the sum of its proper divisors (1).

27700399 is an equidigital number, since it uses as much as digits as its factorization.

27700399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 27700399 is about 5263.1168522084. The cubic root of 27700399 is about 302.5719574736.

The spelling of 27700399 in words is "twenty-seven million, seven hundred thousand, three hundred ninety-nine".