1320479 has 4 divisors (see below), whose sum is σ = 1342920. Its totient is φ = 1298040.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320479 is 9740231.

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 1320479 - 2²⁰ = 271903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320409) 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, 11132 + ... + 11249.

It is an arithmetic number, because the mean of its divisors is an integer number (335730).

2^1320479 is an apocalyptic number.

1320479 is a deficient number, since it is larger than the sum of its proper divisors (22441).

1320479 is an equidigital number, since it uses as much as digits as its factorization.

1320479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22440.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1320479 is about 1149.1209683928. The cubic root of 1320479 is about 109.7093982437.

The spelling of 1320479 in words is "one million, three hundred twenty thousand, four hundred seventy-nine".