8978722346 has 32 divisors (see below), whose sum is σ = 16375504320. Its totient is φ = 3638995200.

The previous prime is 8978722343. The next prime is 8978722349. The reversal of 8978722346 is 6432278798.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8978722343) and next prime (8978722349).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8978722291 and 8978722300.

It is not an unprimeable number, because it can be changed into a prime (8978722343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624665 + ... + 638876.

It is an arithmetic number, because the mean of its divisors is an integer number (511734510).

Almost surely, 2^8978722346 is an apocalyptic number.

8978722346 is a deficient number, since it is larger than the sum of its proper divisors (7396781974).

8978722346 is a wasteful number, since it uses less digits than its factorization.

8978722346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263590.

The product of its digits is 8128512, while the sum is 56.

The square root of 8978722346 is about 94756.1203616948. The cubic root of 8978722346 is about 2078.4432960592.

The spelling of 8978722346 in words is "eight billion, nine hundred seventy-eight million, seven hundred twenty-two thousand, three hundred forty-six".