9662640444 has 48 divisors (see below), whose sum is σ = 25057732000. Its totient is φ = 3220051968.

The previous prime is 9662640439. The next prime is 9662640473. The reversal of 9662640444 is 4440462669.

9662640444 is a `hidden beast` number, since 96 + 62 + 64 + 0 + 444 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 9662640444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526332 + ... + 544380.

Almost surely, 2^9662640444 is an apocalyptic number.

It is an amenable number.

9662640444 is an abundant number, since it is smaller than the sum of its proper divisors (15395091556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9662640444 is a wasteful number, since it uses less digits than its factorization.

9662640444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23019 (or 23011 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 9662640444 is about 98298.7306326994. The cubic root of 9662640444 is about 2129.9297179746.

The spelling of 9662640444 in words is "nine billion, six hundred sixty-two million, six hundred forty thousand, four hundred forty-four".