543872369 has 2 divisors, whose sum is σ = 543872370. Its totient is φ = 543872368.

The previous prime is 543872341. The next prime is 543872387. The reversal of 543872369 is 963278345.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341806144 + 202066225 = 18488^2 + 14215^2 .

It is a cyclic number.

It is not a de Polignac number, because 543872369 - 2²⁸ = 275436913 is a prime.

It is a super-2 number, since 2×543872369² = 591594307523344322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (543871369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271936184 + 271936185.

It is an arithmetic number, because the mean of its divisors is an integer number (271936185).

Almost surely, 2^543872369 is an apocalyptic number.

It is an amenable number.

543872369 is a deficient number, since it is larger than the sum of its proper divisors (1).

543872369 is an equidigital number, since it uses as much as digits as its factorization.

543872369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 47.

The square root of 543872369 is about 23321.0713518912. The cubic root of 543872369 is about 816.2671740025.

The spelling of 543872369 in words is "five hundred forty-three million, eight hundred seventy-two thousand, three hundred sixty-nine".