97639344 has 140 divisors (see below), whose sum is σ = 309826152. Its totient is φ = 29548800.

The previous prime is 97639273. The next prime is 97639357. The reversal of 97639344 is 44393679.

97639344 is a `hidden beast` number, since 9 + 7 + 639 + 3 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 97639344.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 127924 + ... + 128684.

Almost surely, 2^97639344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97639344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154913076).

97639344 is an abundant number, since it is smaller than the sum of its proper divisors (212186808).

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

97639344 is a wasteful number, since it uses less digits than its factorization.

97639344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 777 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 97639344 is about 9881.2622675446. The cubic root of 97639344 is about 460.4773620422.

The spelling of 97639344 in words is "ninety-seven million, six hundred thirty-nine thousand, three hundred forty-four".