1230839 has 4 divisors (see below), whose sum is σ = 1295640. Its totient is φ = 1166040.

The previous prime is 1230829. The next prime is 1230863. The reversal of 1230839 is 9380321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230839 - 2¹⁶ = 1165303 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32372 + ... + 32409.

It is an arithmetic number, because the mean of its divisors is an integer number (323910).

2^1230839 is an apocalyptic number.

1230839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1230839 is a deficient number, since it is larger than the sum of its proper divisors (64801).

1230839 is an equidigital number, since it uses as much as digits as its factorization.

1230839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64800.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1230839 is about 1109.4318365722. The cubic root of 1230839 is about 107.1684829287.

The spelling of 1230839 in words is "one million, two hundred thirty thousand, eight hundred thirty-nine".