869443 has 2 divisors, whose sum is σ = 869444. Its totient is φ = 869442.

The previous prime is 869437. The next prime is 869461. The reversal of 869443 is 344968.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869443 is a prime.

It is a super-2 number, since 2×869443² = 1511862260498, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 869399 and 869408.

It is not a weakly prime, because it can be changed into another prime (869413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434721 + 434722.

It is an arithmetic number, because the mean of its divisors is an integer number (434722).

2⁸⁶⁹⁴⁴³ is an apocalyptic number.

869443 is a deficient number, since it is larger than the sum of its proper divisors (1).

869443 is an equidigital number, since it uses as much as digits as its factorization.

869443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 869443 is about 932.4392741621. The cubic root of 869443 is about 95.4436497699.

The spelling of 869443 in words is "eight hundred sixty-nine thousand, four hundred forty-three".