11961277 has 4 divisors (see below), whose sum is σ = 11995900. Its totient is φ = 11926656.

The previous prime is 11961263. The next prime is 11961283. The reversal of 11961277 is 77216911.

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 9947716 + 2013561 = 3154^2 + 1419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11961277 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 (11961377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16788 + ... + 17485.

It is an arithmetic number, because the mean of its divisors is an integer number (2998975).

Almost surely, 2^11961277 is an apocalyptic number.

It is an amenable number.

11961277 is a deficient number, since it is larger than the sum of its proper divisors (34623).

11961277 is an equidigital number, since it uses as much as digits as its factorization.

11961277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34622.

The product of its digits is 5292, while the sum is 34.

The square root of 11961277 is about 3458.5079152721. The cubic root of 11961277 is about 228.6963233169.

The spelling of 11961277 in words is "eleven million, nine hundred sixty-one thousand, two hundred seventy-seven".