749445376 has 81 divisors (see below), whose sum is σ = 1576031821. Its totient is φ = 355668992.

The previous prime is 749445371. The next prime is 749445379. The reversal of 749445376 is 673544947.

The square root of 749445376 is 27376.

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

It can be written as a sum of positive squares in only one way, i.e., 392990976 + 356454400 = 19824^2 + 18880^2 .

It is a Duffinian number.

Its product of digits (2540160) is a multiple of the sum of its prime divisors (90).

It is not an unprimeable number, because it can be changed into a prime (749445371) 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 8 ways as a sum of consecutive naturals, for example, 12702435 + ... + 12702493.

Almost surely, 2^749445376 is an apocalyptic number.

749445376 is the 27376-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749445376

749445376 is an abundant number, since it is smaller than the sum of its proper divisors (826586445).

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

749445376 is an frugal number, since it uses more digits than its factorization.

749445376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 90 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 49.

The cubic root of 749445376 is about 908.3362814781.

Multiplying 749445376 by its sum of digits (49), we get a square (36722823424 = 191632²).

The spelling of 749445376 in words is "seven hundred forty-nine million, four hundred forty-five thousand, three hundred seventy-six".