1232639 has 4 divisors (see below), whose sum is σ = 1286256. Its totient is φ = 1179024.

The previous prime is 1232617. The next prime is 1232657. The reversal of 1232639 is 9362321.

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 1232639 - 2¹² = 1228543 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232659) 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, 26774 + ... + 26819.

It is an arithmetic number, because the mean of its divisors is an integer number (321564).

2^1232639 is an apocalyptic number.

1232639 is a deficient number, since it is larger than the sum of its proper divisors (53617).

1232639 is an equidigital number, since it uses as much as digits as its factorization.

1232639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53616.

The product of its digits is 1944, while the sum is 26.

The square root of 1232639 is about 1110.2427662453. The cubic root of 1232639 is about 107.2206991570.

The spelling of 1232639 in words is "one million, two hundred thirty-two thousand, six hundred thirty-nine".