135427399 has 2 divisors, whose sum is σ = 135427400. Its totient is φ = 135427398.

The previous prime is 135427367. The next prime is 135427403. The reversal of 135427399 is 993724531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135427399 - 2⁵ = 135427367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135427319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67713699 + 67713700.

It is an arithmetic number, because the mean of its divisors is an integer number (67713700).

Almost surely, 2^135427399 is an apocalyptic number.

135427399 is a deficient number, since it is larger than the sum of its proper divisors (1).

135427399 is an equidigital number, since it uses as much as digits as its factorization.

135427399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 135427399 is about 11637.3278290164. The cubic root of 135427399 is about 513.5335781521.

The spelling of 135427399 in words is "one hundred thirty-five million, four hundred twenty-seven thousand, three hundred ninety-nine".