135398903 has 2 divisors, whose sum is σ = 135398904. Its totient is φ = 135398902.

The previous prime is 135398843. The next prime is 135398929. The reversal of 135398903 is 309893531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135398903 - 2²² = 131204599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135398983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67699451 + 67699452.

It is an arithmetic number, because the mean of its divisors is an integer number (67699452).

Almost surely, 2^135398903 is an apocalyptic number.

135398903 is a deficient number, since it is larger than the sum of its proper divisors (1).

135398903 is an equidigital number, since it uses as much as digits as its factorization.

135398903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 135398903 is about 11636.1034285537. The cubic root of 135398903 is about 513.4975571808.

The spelling of 135398903 in words is "one hundred thirty-five million, three hundred ninety-eight thousand, nine hundred three".