1355423444 has 24 divisors (see below), whose sum is σ = 2507581440. Its totient is φ = 639278784.

The previous prime is 1355423437. The next prime is 1355423471. The reversal of 1355423444 is 4443245531.

It is a super-3 number, since 3×1355423444³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20564 + ... + 55979.

It is an arithmetic number, because the mean of its divisors is an integer number (104482560).

Almost surely, 2^1355423444 is an apocalyptic number.

It is an amenable number.

1355423444 is a deficient number, since it is larger than the sum of its proper divisors (1152157996).

1355423444 is a wasteful number, since it uses less digits than its factorization.

1355423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76799 (or 76797 counting only the distinct ones).

The product of its digits is 115200, while the sum is 35.

The square root of 1355423444 is about 36816.0758908388. The cubic root of 1355423444 is about 1106.6874823507.

Adding to 1355423444 its reverse (4443245531), we get a palindrome (5798668975).

The spelling of 1355423444 in words is "one billion, three hundred fifty-five million, four hundred twenty-three thousand, four hundred forty-four".