8961377 has 4 divisors (see below), whose sum is σ = 9270420. Its totient is φ = 8652336.

The previous prime is 8961373. The next prime is 8961383. The reversal of 8961377 is 7731698.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3984016 + 4977361 = 1996^2 + 2231^2 .

It is a cyclic number.

It is not a de Polignac number, because 8961377 - 2² = 8961373 is a prime.

It is a super-2 number, since 2×8961377² = 160612555472258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8961373) 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, 154478 + ... + 154535.

It is an arithmetic number, because the mean of its divisors is an integer number (2317605).

Almost surely, 2^8961377 is an apocalyptic number.

It is an amenable number.

8961377 is a deficient number, since it is larger than the sum of its proper divisors (309043).

8961377 is a wasteful number, since it uses less digits than its factorization.

8961377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309042.

The product of its digits is 63504, while the sum is 41.

The square root of 8961377 is about 2993.5559122889. Note that the first 3 decimals coincide. The cubic root of 8961377 is about 207.7104035058.

The spelling of 8961377 in words is "eight million, nine hundred sixty-one thousand, three hundred seventy-seven".