744420401 has 6 divisors (see below), whose sum is σ = 770976102. Its totient is φ = 718749920.

The previous prime is 744420379. The next prime is 744420407. The reversal of 744420401 is 104024447.

It can be written as a sum of positive squares in 3 ways, for example, as 15366400 + 729054001 = 3920^2 + 27001^2 .

It is not a de Polignac number, because 744420401 - 2¹⁸ = 744158257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744420407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 441740 + ... + 443421.

It is an arithmetic number, because the mean of its divisors is an integer number (128496017).

Almost surely, 2^744420401 is an apocalyptic number.

It is an amenable number.

744420401 is a deficient number, since it is larger than the sum of its proper divisors (26555701).

744420401 is an equidigital number, since it uses as much as digits as its factorization.

744420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885219 (or 885190 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 744420401 is about 27284.0686298800. The cubic root of 744420401 is about 906.3016183932.

Adding to 744420401 its reverse (104024447), we get a palindrome (848444848).

The spelling of 744420401 in words is "seven hundred forty-four million, four hundred twenty thousand, four hundred one".