383969086549 has 6 divisors (see below), whose sum is σ = 384590777910. Its totient is φ = 383348398536.

The previous prime is 383969086547. The next prime is 383969086609. The reversal of 383969086549 is 945680969383.

It can be written as a sum of positive squares in only one way, i.e., 380865482449 + 3103604100 = 617143^2 + 55710^2 .

It is not a de Polignac number, because 383969086549 - 2¹ = 383969086547 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 (383969086547) 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, 117894 + ... + 884215.

It is an arithmetic number, because the mean of its divisors is an integer number (64098462985).

Almost surely, 2^383969086549 is an apocalyptic number.

It is an amenable number.

383969086549 is a deficient number, since it is larger than the sum of its proper divisors (621691361).

383969086549 is an frugal number, since it uses more digits than its factorization.

383969086549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003347 (or 1002728 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 70.

The spelling of 383969086549 in words is "three hundred eighty-three billion, nine hundred sixty-nine million, eighty-six thousand, five hundred forty-nine".