4491556949 has 8 divisors (see below), whose sum is σ = 4909255392. Its totient is φ = 4075421040.

The previous prime is 4491556933. The next prime is 4491556969. The reversal of 4491556949 is 9496551944.

4491556949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4491556949 - 2⁴ = 4491556933 is a prime.

It is a super-2 number, since 2×4491556949² = 40348167652220377202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4491556894 and 4491556903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491556969) 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, 384614 + ... + 396119.

It is an arithmetic number, because the mean of its divisors is an integer number (613656924).

Almost surely, 2^4491556949 is an apocalyptic number.

It is an amenable number.

4491556949 is a deficient number, since it is larger than the sum of its proper divisors (417698443).

4491556949 is a wasteful number, since it uses less digits than its factorization.

4491556949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781267.

The product of its digits is 6998400, while the sum is 56.

The square root of 4491556949 is about 67019.0789924780. The cubic root of 4491556949 is about 1649.9304468998.

The spelling of 4491556949 in words is "four billion, four hundred ninety-one million, five hundred fifty-six thousand, nine hundred forty-nine".