135085399 has 2 divisors, whose sum is σ = 135085400. Its totient is φ = 135085398.

The previous prime is 135085387. The next prime is 135085453. The reversal of 135085399 is 993580531.

135085399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135085399 - 2⁵ = 135085367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135085309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67542699 + 67542700.

It is an arithmetic number, because the mean of its divisors is an integer number (67542700).

Almost surely, 2^135085399 is an apocalyptic number.

135085399 is a deficient number, since it is larger than the sum of its proper divisors (1).

135085399 is an equidigital number, since it uses as much as digits as its factorization.

135085399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 135085399 is about 11622.6244454512. The cubic root of 135085399 is about 513.1009317471.

The spelling of 135085399 in words is "one hundred thirty-five million, eighty-five thousand, three hundred ninety-nine".