9978273396 has 144 divisors (see below), whose sum is σ = 32677590400. Its totient is φ = 2493110016.

The previous prime is 9978273391. The next prime is 9978273401. The reversal of 9978273396 is 6933728799.

It is an interprime number because it is at equal distance from previous prime (9978273391) and next prime (9978273401).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978273391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17911 + ... + 142398.

Almost surely, 2^9978273396 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 9978273396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16338795200).

9978273396 is an abundant number, since it is smaller than the sum of its proper divisors (22699317004).

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

9978273396 is a wasteful number, since it uses less digits than its factorization.

9978273396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160358 (or 160353 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 63.

The square root of 9978273396 is about 99891.3079101480. The cubic root of 9978273396 is about 2152.8732736977.

The spelling of 9978273396 in words is "nine billion, nine hundred seventy-eight million, two hundred seventy-three thousand, three hundred ninety-six".