4509449961 has 4 divisors (see below), whose sum is σ = 6012599952. Its totient is φ = 3006299972.

The previous prime is 4509449939. The next prime is 4509449963. The reversal of 4509449961 is 1699449054.

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 not a de Polignac number, because 4509449961 - 2¹¹ = 4509447913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4509449963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751574991 + ... + 751574996.

It is an arithmetic number, because the mean of its divisors is an integer number (1503149988).

Almost surely, 2^4509449961 is an apocalyptic number.

It is an amenable number.

4509449961 is a deficient number, since it is larger than the sum of its proper divisors (1503149991).

4509449961 is a wasteful number, since it uses less digits than its factorization.

4509449961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503149990.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 4509449961 is about 67152.4382357037. The cubic root of 4509449961 is about 1652.1184861919.

The spelling of 4509449961 in words is "four billion, five hundred nine million, four hundred forty-nine thousand, nine hundred sixty-one".