909648459 has 12 divisors (see below), whose sum is σ = 1371064656. Its totient is φ = 580065552.

The previous prime is 909648451. The next prime is 909648463. The reversal of 909648459 is 954846909.

It is not a de Polignac number, because 909648459 - 2³ = 909648451 is a prime.

It is a super-2 number, since 2×909648459² = 1654920637922149362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (909648451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2197012 + ... + 2197425.

It is an arithmetic number, because the mean of its divisors is an integer number (114255388).

Almost surely, 2^909648459 is an apocalyptic number.

909648459 is a deficient number, since it is larger than the sum of its proper divisors (461416197).

909648459 is a wasteful number, since it uses less digits than its factorization.

909648459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394466 (or 4394463 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 909648459 is about 30160.3789598208. The cubic root of 909648459 is about 968.9273078219.

The spelling of 909648459 in words is "nine hundred nine million, six hundred forty-eight thousand, four hundred fifty-nine".