919964928 has 144 divisors (see below), whose sum is σ = 2677280256. Its totient is φ = 279183360.

The previous prime is 919964917. The next prime is 919964939. The reversal of 919964928 is 829469919.

It is an interprime number because it is at equal distance from previous prime (919964917) and next prime (919964939).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403600 + ... + 405872.

It is an arithmetic number, because the mean of its divisors is an integer number (18592224).

Almost surely, 2^919964928 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 919964928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338640128).

919964928 is an abundant number, since it is smaller than the sum of its proper divisors (1757315328).

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

919964928 is a wasteful number, since it uses less digits than its factorization.

919964928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340 (or 2326 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 57.

The square root of 919964928 is about 30330.9236258971. The cubic root of 919964928 is about 972.5764671360.

The spelling of 919964928 in words is "nine hundred nineteen million, nine hundred sixty-four thousand, nine hundred twenty-eight".