135087893 has 2 divisors, whose sum is σ = 135087894. Its totient is φ = 135087892.

The previous prime is 135087889. The next prime is 135087919. The reversal of 135087893 is 398780531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71199844 + 63888049 = 8438^2 + 7993^2 .

It is a cyclic number.

It is not a de Polignac number, because 135087893 - 2² = 135087889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135087833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67543946 + 67543947.

It is an arithmetic number, because the mean of its divisors is an integer number (67543947).

Almost surely, 2^135087893 is an apocalyptic number.

It is an amenable number.

135087893 is a deficient number, since it is larger than the sum of its proper divisors (1).

135087893 is an equidigital number, since it uses as much as digits as its factorization.

135087893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 135087893 is about 11622.7317356979. The cubic root of 135087893 is about 513.1040894183.

The spelling of 135087893 in words is "one hundred thirty-five million, eighty-seven thousand, eight hundred ninety-three".