872369 has 2 divisors, whose sum is σ = 872370. Its totient is φ = 872368.

The previous prime is 872353. The next prime is 872381. The reversal of 872369 is 963278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 97969 = 880^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 872369 - 2⁴ = 872353 is a prime.

It is a super-2 number, since 2×872369² = 1522055344322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁵ + 7⁷ + 3⁸ + 2¹³ + 6⁴ + 9 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872369.

It is not a weakly prime, because it can be changed into another prime (872269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436184 + 436185.

It is an arithmetic number, because the mean of its divisors is an integer number (436185).

2⁸⁷²³⁶⁹ is an apocalyptic number.

It is an amenable number.

872369 is a deficient number, since it is larger than the sum of its proper divisors (1).

872369 is an equidigital number, since it uses as much as digits as its factorization.

872369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 872369 is about 934.0069592888. The cubic root of 872369 is about 95.5505977136.

Subtracting 872369 from its reverse (963278), we obtain a palindrome (90909).

The spelling of 872369 in words is "eight hundred seventy-two thousand, three hundred sixty-nine".