4091961 has 8 divisors (see below), whose sum is σ = 5572224. Its totient is φ = 2669840.

The previous prime is 4091959. The next prime is 4091993. The reversal of 4091961 is 1691904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4091961 - 2¹ = 4091959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4091911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14370 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (696528).

Almost surely, 2^4091961 is an apocalyptic number.

It is an amenable number.

4091961 is a deficient number, since it is larger than the sum of its proper divisors (1480263).

4091961 is a wasteful number, since it uses less digits than its factorization.

4091961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29071.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 4091961 is about 2022.8596095627. The cubic root of 4091961 is about 159.9473915583.

The spelling of 4091961 in words is "four million, ninety-one thousand, nine hundred sixty-one".