8909464778 has 8 divisors (see below), whose sum is σ = 13452702240. Its totient is φ = 4425230700.

The previous prime is 8909464769. The next prime is 8909464789. The reversal of 8909464778 is 8774649098.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8909464778.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14750468 + ... + 14751071.

It is an arithmetic number, because the mean of its divisors is an integer number (1681587780).

Almost surely, 2^8909464778 is an apocalyptic number.

8909464778 is a deficient number, since it is larger than the sum of its proper divisors (4543237462).

8909464778 is a wasteful number, since it uses less digits than its factorization.

8909464778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29501692.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The square root of 8909464778 is about 94389.9612141037. The cubic root of 8909464778 is about 2073.0854573917.

The spelling of 8909464778 in words is "eight billion, nine hundred nine million, four hundred sixty-four thousand, seven hundred seventy-eight".