285383529369 has 15 divisors (see below), whose sum is σ = 426320849647. Its totient is φ = 190252480968.

The previous prime is 285383529341. The next prime is 285383529401. The reversal of 285383529369 is 963925383582.

The square root of 285383529369 is 534213.

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

285383529369 is a `hidden beast` number, since 2 + 8 + 538 + 3 + 5 + 2 + 93 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 148344374025 + 137039155344 = 385155^2 + 370188^2 .

It is not a de Polignac number, because 285383529369 - 2⁷ = 285383529241 is a prime.

It is a super-2 number, since 2×285383529369² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285383529869) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4778239 + ... + 4837595.

Almost surely, 2^285383529369 is an apocalyptic number.

285383529369 is the 534213-rd square number.

285383529369 is the 267107-th centered octagonal number.

It is an amenable number.

285383529369 is a deficient number, since it is larger than the sum of its proper divisors (140937320278).

285383529369 is an frugal number, since it uses more digits than its factorization.

285383529369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118726 (or 59360 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 63.

It can be divided in two parts, 2853835 and 29369, that added together give a square (2883204 = 1698²).

The spelling of 285383529369 in words is "two hundred eighty-five billion, three hundred eighty-three million, five hundred twenty-nine thousand, three hundred sixty-nine".