747439891400 has 96 divisors (see below), whose sum is σ = 1749031793640. Its totient is φ = 297045596160.

The previous prime is 747439891391. The next prime is 747439891417. The reversal of 747439891400 is 4198934747.

It can be written as a sum of positive squares in 12 ways, for example, as 164474046916 + 582965844484 = 405554^2 + 763522^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57325682 + ... + 57338718.

Almost surely, 2^747439891400 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 747439891400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874515896820).

747439891400 is an abundant number, since it is smaller than the sum of its proper divisors (1001591902240).

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

747439891400 is a wasteful number, since it uses less digits than its factorization.

747439891400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14883 (or 14874 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 747439891400 in words is "seven hundred forty-seven billion, four hundred thirty-nine million, eight hundred ninety-one thousand, four hundred".