744521403 has 16 divisors (see below), whose sum is σ = 1049646080. Its totient is φ = 468107424.

The previous prime is 744521383. The next prime is 744521411. The reversal of 744521403 is 304125447.

It is not a de Polignac number, because 744521403 - 2²² = 740327099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744521423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16576 + ... + 41997.

It is an arithmetic number, because the mean of its divisors is an integer number (65602880).

Almost surely, 2^744521403 is an apocalyptic number.

744521403 is a deficient number, since it is larger than the sum of its proper divisors (305124677).

744521403 is a wasteful number, since it uses less digits than its factorization.

744521403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58818.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 744521403 is about 27285.9195007242. The cubic root of 744521403 is about 906.3426051512.

It can be divided in two parts, 74452 and 1403, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 744521403 in words is "seven hundred forty-four million, five hundred twenty-one thousand, four hundred three".