744427 has 4 divisors (see below), whose sum is σ = 753480. Its totient is φ = 735376.

The previous prime is 744409. The next prime is 744431. The reversal of 744427 is 724447.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-744427 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 744395 and 744404.

It is not an unprimeable number, because it can be changed into a prime (744407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4402 + ... + 4567.

It is an arithmetic number, because the mean of its divisors is an integer number (188370).

2⁷⁴⁴⁴²⁷ is an apocalyptic number.

744427 is a deficient number, since it is larger than the sum of its proper divisors (9053).

744427 is an equidigital number, since it uses as much as digits as its factorization.

744427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9052.

The product of its digits is 6272, while the sum is 28.

The square root of 744427 is about 862.8018312452. The cubic root of 744427 is about 90.6304296390.

The spelling of 744427 in words is "seven hundred forty-four thousand, four hundred twenty-seven", and thus it is an iban number.