8428969772 has 12 divisors (see below), whose sum is σ = 15527049720. Its totient is φ = 3992669856.

The previous prime is 8428969739. The next prime is 8428969793. The reversal of 8428969772 is 2779698248.

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, 55453673 + ... + 55453824.

It is an arithmetic number, because the mean of its divisors is an integer number (1293920810).

Almost surely, 2^8428969772 is an apocalyptic number.

It is an amenable number.

8428969772 is a deficient number, since it is larger than the sum of its proper divisors (7098079948).

8428969772 is a wasteful number, since it uses less digits than its factorization.

8428969772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110907520 (or 110907518 counting only the distinct ones).

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

The square root of 8428969772 is about 91809.4209327126. The cubic root of 8428969772 is about 2035.1269188590.

The spelling of 8428969772 in words is "eight billion, four hundred twenty-eight million, nine hundred sixty-nine thousand, seven hundred seventy-two".