740239978384 has 45 divisors (see below), whose sum is σ = 1485576308307. Its totient is φ = 357309050112.

The previous prime is 740239978381. The next prime is 740239978391. The reversal of 740239978384 is 483879932047.

The square root of 740239978384 is 860372.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 94261280400 + 645978697984 = 307020^2 + 803728^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740239978381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 99799444 + ... + 99806860.

Almost surely, 2^740239978384 is an apocalyptic number.

740239978384 is the 860372-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 740239978384

740239978384 is an abundant number, since it is smaller than the sum of its proper divisors (745336329923).

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

740239978384 is an frugal number, since it uses more digits than its factorization.

740239978384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900 (or 7448 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 64.

Multiplying 740239978384 by its sum of digits (64), we get a square (47375358616576 = 6882976²).

The spelling of 740239978384 in words is "seven hundred forty billion, two hundred thirty-nine million, nine hundred seventy-eight thousand, three hundred eighty-four".