135489377 has 2 divisors, whose sum is σ = 135489378. Its totient is φ = 135489376.

The previous prime is 135489329. The next prime is 135489401. The reversal of 135489377 is 773984531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134536801 + 952576 = 11599^2 + 976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135489377 is a prime.

It is not a weakly prime, because it can be changed into another prime (135489307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67744688 + 67744689.

It is an arithmetic number, because the mean of its divisors is an integer number (67744689).

Almost surely, 2^135489377 is an apocalyptic number.

It is an amenable number.

135489377 is a deficient number, since it is larger than the sum of its proper divisors (1).

135489377 is an equidigital number, since it uses as much as digits as its factorization.

135489377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 135489377 is about 11639.9904209583. The cubic root of 135489377 is about 513.6119053106.

The spelling of 135489377 in words is "one hundred thirty-five million, four hundred eighty-nine thousand, three hundred seventy-seven".