4549091 has 4 divisors (see below), whose sum is σ = 4553472. Its totient is φ = 4544712.

The previous prime is 4549087. The next prime is 4549117. The reversal of 4549091 is 1909454.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1909454 = 2 ⋅954727.

It is a cyclic number.

It is not a de Polignac number, because 4549091 - 2² = 4549087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4549021) 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, 350 + ... + 3036.

It is an arithmetic number, because the mean of its divisors is an integer number (1138368).

Almost surely, 2^4549091 is an apocalyptic number.

4549091 is a deficient number, since it is larger than the sum of its proper divisors (4381).

4549091 is a wasteful number, since it uses less digits than its factorization.

4549091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 4549091 is about 2132.8598172407. The cubic root of 4549091 is about 165.6945440004.

The spelling of 4549091 in words is "four million, five hundred forty-nine thousand, ninety-one".