4450646991 has 16 divisors (see below), whose sum is σ = 6874843904. Its totient is φ = 2508387264.

The previous prime is 4450646987. The next prime is 4450647007. The reversal of 4450646991 is 1996460544.

It is not a de Polignac number, because 4450646991 - 2² = 4450646987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4450646991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4450646951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450081 + ... + 1453146.

It is an arithmetic number, because the mean of its divisors is an integer number (429677744).

Almost surely, 2^4450646991 is an apocalyptic number.

4450646991 is a deficient number, since it is larger than the sum of its proper divisors (2424196913).

4450646991 is a wasteful number, since it uses less digits than its factorization.

4450646991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903310.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 4450646991 is about 66713.1695469493. The cubic root of 4450646991 is about 1644.9058671264.

The spelling of 4450646991 in words is "four billion, four hundred fifty million, six hundred forty-six thousand, nine hundred ninety-one".