747989000 has 128 divisors (see below), whose sum is σ = 1946954880. Its totient is φ = 266656000.

The previous prime is 747988993. The next prime is 747989009. The reversal of 747989000 is 989747.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747989009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 582359 + ... + 583641.

It is an arithmetic number, because the mean of its divisors is an integer number (15210585).

Almost surely, 2^747989000 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 747989000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973477440).

747989000 is an abundant number, since it is smaller than the sum of its proper divisors (1198965880).

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

747989000 is a wasteful number, since it uses less digits than its factorization.

747989000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 747989000 is about 27349.3875616987. The cubic root of 747989000 is about 907.7475185371.

The spelling of 747989000 in words is "seven hundred forty-seven million, nine hundred eighty-nine thousand".