1003444421 has 8 divisors (see below), whose sum is σ = 1151257920. Its totient is φ = 856747008.

The previous prime is 1003444369. The next prime is 1003444423. The reversal of 1003444421 is 1244443001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1003444421 - 2¹⁸ = 1003182277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003444423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277091 + ... + 280688.

It is an arithmetic number, because the mean of its divisors is an integer number (143907240).

Almost surely, 2^1003444421 is an apocalyptic number.

It is an amenable number.

1003444421 is a deficient number, since it is larger than the sum of its proper divisors (147813499).

1003444421 is an equidigital number, since it uses as much as digits as its factorization.

1003444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558043.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1003444421 is about 31677.1908634588. The cubic root of 1003444421 is about 1001.1468246238.

Adding to 1003444421 its reverse (1244443001), we get a palindrome (2247887422).

The spelling of 1003444421 in words is "one billion, three million, four hundred forty-four thousand, four hundred twenty-one".