27870413 has 2 divisors, whose sum is σ = 27870414. Its totient is φ = 27870412.

The previous prime is 27870391. The next prime is 27870431. The reversal of 27870413 is 31407872.

It is a happy number.

Together with next prime (27870431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26399044 + 1471369 = 5138^2 + 1213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27870413 is a prime.

It is a super-3 number, since 3×27870413³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27870413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27870443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13935206 + 13935207.

It is an arithmetic number, because the mean of its divisors is an integer number (13935207).

Almost surely, 2^27870413 is an apocalyptic number.

It is an amenable number.

27870413 is a deficient number, since it is larger than the sum of its proper divisors (1).

27870413 is an equidigital number, since it uses as much as digits as its factorization.

27870413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 27870413 is about 5279.2436011232. The cubic root of 27870413 is about 303.1897173329.

The spelling of 27870413 in words is "twenty-seven million, eight hundred seventy thousand, four hundred thirteen".