1385998441 has 9 divisors (see below), whose sum is σ = 1412126013. Its totient is φ = 1360347660.

The previous prime is 1385998433. The next prime is 1385998451. The reversal of 1385998441 is 1448995831.

The square root of 1385998441 is 37229.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1385998441 - 2³ = 1385998433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385998451) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2196196 + ... + 2196826.

Almost surely, 2^1385998441 is an apocalyptic number.

1385998441 is the 37229-th square number.

1385998441 is the 18615-th centered octagonal number.

It is an amenable number.

1385998441 is a deficient number, since it is larger than the sum of its proper divisors (26127572).

1385998441 is an frugal number, since it uses more digits than its factorization.

1385998441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 690 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The cubic root of 1385998441 is about 1114.9470615069.

The spelling of 1385998441 in words is "one billion, three hundred eighty-five million, nine hundred ninety-eight thousand, four hundred forty-one".