8135977 has 4 divisors (see below), whose sum is σ = 8289540. Its totient is φ = 7982416.

The previous prime is 8135957. The next prime is 8135983. The reversal of 8135977 is 7795318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7795318 = 2 ⋅3897659.

It can be written as a sum of positive squares in 2 ways, for example, as 4541161 + 3594816 = 2131^2 + 1896^2 .

It is a cyclic number.

It is not a de Polignac number, because 8135977 - 2¹¹ = 8133929 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8135927) 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 in 3 ways as a sum of consecutive naturals, for example, 76702 + ... + 76807.

It is an arithmetic number, because the mean of its divisors is an integer number (2072385).

Almost surely, 2^8135977 is an apocalyptic number.

It is an amenable number.

8135977 is a deficient number, since it is larger than the sum of its proper divisors (153563).

8135977 is a wasteful number, since it uses less digits than its factorization.

8135977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153562.

The product of its digits is 52920, while the sum is 40.

The square root of 8135977 is about 2852.3634060196. The cubic root of 8135977 is about 201.1267815615.

It can be divided in two parts, 813597 and 7, that added together give a square (813604 = 902²).

The spelling of 8135977 in words is "eight million, one hundred thirty-five thousand, nine hundred seventy-seven".