4086961 has 4 divisors (see below), whose sum is σ = 4098292. Its totient is φ = 4075632.

The previous prime is 4086949. The next prime is 4086967. The reversal of 4086961 is 1696804.

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 2383936 + 1703025 = 1544^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 4086961 - 2⁷ = 4086833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4086967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5106 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (1024573).

Almost surely, 2^4086961 is an apocalyptic number.

It is an amenable number.

4086961 is a deficient number, since it is larger than the sum of its proper divisors (11331).

4086961 is a wasteful number, since it uses less digits than its factorization.

4086961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11330.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 4086961 is about 2021.6233576015. The cubic root of 4086961 is about 159.8822180050.

The spelling of 4086961 in words is "four million, eighty-six thousand, nine hundred sixty-one".