719989440 has 224 divisors, whose sum is σ = 2444520384. Its totient is φ = 178913280.

The previous prime is 719989433. The next prime is 719989451. The reversal of 719989440 is 44989917.

It is a Harshad number since it is a multiple of its sum of digits (51).

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 31 ways as a sum of consecutive naturals, for example, 2562100 + ... + 2562380.

Almost surely, 2^719989440 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 719989440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222260192).

719989440 is an abundant number, since it is smaller than the sum of its proper divisors (1724530944).

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

719989440 is a wasteful number, since it uses less digits than its factorization.

719989440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 719989440 is about 26832.6189552939. The cubic root of 719989440 is about 896.2765674720.

The spelling of 719989440 in words is "seven hundred nineteen million, nine hundred eighty-nine thousand, four hundred forty".