135149877 has 10 divisors (see below), whose sum is σ = 201890678. Its totient is φ = 90099864.

The previous prime is 135149867. The next prime is 135149879. The reversal of 135149877 is 778941531.

It can be written as a sum of positive squares in only one way, i.e., 132917841 + 2232036 = 11529^2 + 1494^2 .

It is not a de Polignac number, because 135149877 - 2¹⁵ = 135117109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135149879) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 834178 + ... + 834339.

Almost surely, 2^135149877 is an apocalyptic number.

It is an amenable number.

135149877 is a deficient number, since it is larger than the sum of its proper divisors (66740801).

135149877 is an equidigital number, since it uses as much as digits as its factorization.

135149877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668529 (or 1668520 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 135149877 is about 11625.3979286732. The cubic root of 135149877 is about 513.1825553219.

The spelling of 135149877 in words is "one hundred thirty-five million, one hundred forty-nine thousand, eight hundred seventy-seven".