9773138432 has 90 divisors (see below), whose sum is σ = 20824442727. Its totient is φ = 4581228544.

The previous prime is 9773138413. The next prime is 9773138437. The reversal of 9773138432 is 2348313779.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 9491435776 + 281702656 = 97424^2 + 16784^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=69904.

It is a super-2 number, since 2×9773138432² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9773138437) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38027648 + ... + 38027904.

Almost surely, 2^9773138432 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 9773138432

9773138432 is an abundant number, since it is smaller than the sum of its proper divisors (11051304295).

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

9773138432 is an frugal number, since it uses more digits than its factorization.

9773138432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 276 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 9773138432 is about 98859.1848641288. The cubic root of 9773138432 is about 2138.0179651104.

The spelling of 9773138432 in words is "nine billion, seven hundred seventy-three million, one hundred thirty-eight thousand, four hundred thirty-two".