9997902738 has 40 divisors (see below), whose sum is σ = 22923717168. Its totient is φ = 3255128856.

The previous prime is 9997902737. The next prime is 9997902773. The reversal of 9997902738 is 8372097999.

It is not an unprimeable number, because it can be changed into a prime (9997902737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 710656 + ... + 724587.

Almost surely, 2^9997902738 is an apocalyptic number.

9997902738 is an abundant number, since it is smaller than the sum of its proper divisors (12925814430).

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

9997902738 is a wasteful number, since it uses less digits than its factorization.

9997902738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435300 (or 1435291 counting only the distinct ones).

The product of its (nonzero) digits is 15431472, while the sum is 63.

The square root of 9997902738 is about 99989.5131401289. The cubic root of 9997902738 is about 2154.2840657012.

The spelling of 9997902738 in words is "nine billion, nine hundred ninety-seven million, nine hundred two thousand, seven hundred thirty-eight".