99644404 has 12 divisors (see below), whose sum is σ = 179090884. Its totient is φ = 48475584.

The previous prime is 99644393. The next prime is 99644407. The reversal of 99644404 is 40444699.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62410000 + 37234404 = 7900^2 + 6102^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99644407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336489 + ... + 336784.

Almost surely, 2^99644404 is an apocalyptic number.

It is an amenable number.

99644404 is a deficient number, since it is larger than the sum of its proper divisors (79446480).

99644404 is a wasteful number, since it uses less digits than its factorization.

99644404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673314 (or 673312 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 99644404 is about 9982.2043657701. The cubic root of 99644404 is about 463.6080531267.

The spelling of 99644404 in words is "ninety-nine million, six hundred forty-four thousand, four hundred four".