8978775349 has 2 divisors, whose sum is σ = 8978775350. Its totient is φ = 8978775348.

The previous prime is 8978775329. The next prime is 8978775367. The reversal of 8978775349 is 9435778798.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8916080625 + 62694724 = 94425^2 + 7918^2 .

It is a cyclic number.

It is not a de Polignac number, because 8978775349 - 2⁵ = 8978775317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8978775319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4489387674 + 4489387675.

It is an arithmetic number, because the mean of its divisors is an integer number (4489387675).

Almost surely, 2^8978775349 is an apocalyptic number.

It is an amenable number.

8978775349 is a deficient number, since it is larger than the sum of its proper divisors (1).

8978775349 is an equidigital number, since it uses as much as digits as its factorization.

8978775349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 106686720, while the sum is 67.

The square root of 8978775349 is about 94756.4000424246. The cubic root of 8978775349 is about 2078.4473858583.

The spelling of 8978775349 in words is "eight billion, nine hundred seventy-eight million, seven hundred seventy-five thousand, three hundred forty-nine".