27696139 has 2 divisors, whose sum is σ = 27696140. Its totient is φ = 27696138.

The previous prime is 27696103. The next prime is 27696143. The reversal of 27696139 is 93169672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27696139 - 2²³ = 19307531 is a prime.

It is a super-2 number, since 2×27696139² = 1534152231014642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27696095 and 27696104.

It is not a weakly prime, because it can be changed into another prime (27696169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13848069 + 13848070.

It is an arithmetic number, because the mean of its divisors is an integer number (13848070).

Almost surely, 2^27696139 is an apocalyptic number.

27696139 is a deficient number, since it is larger than the sum of its proper divisors (1).

27696139 is an equidigital number, since it uses as much as digits as its factorization.

27696139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 27696139 is about 5262.7121334916. The cubic root of 27696139 is about 302.5564459928.

The spelling of 27696139 in words is "twenty-seven million, six hundred ninety-six thousand, one hundred thirty-nine".