4091977 has 4 divisors (see below), whose sum is σ = 4099536. Its totient is φ = 4084420.

The previous prime is 4091959. The next prime is 4091993. The reversal of 4091977 is 7791904.

4091977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4091977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4091947) 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, 2899 + ... + 4072.

It is an arithmetic number, because the mean of its divisors is an integer number (1024884).

Almost surely, 2^4091977 is an apocalyptic number.

It is an amenable number.

4091977 is a deficient number, since it is larger than the sum of its proper divisors (7559).

4091977 is an equidigital number, since it uses as much as digits as its factorization.

4091977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7558.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 4091977 is about 2022.8635643562. The cubic root of 4091977 is about 159.9476000284.

The spelling of 4091977 in words is "four million, ninety-one thousand, nine hundred seventy-seven".