1320909879 has 8 divisors (see below), whose sum is σ = 1808813680. Its totient is φ = 856806336.

The previous prime is 1320909871. The next prime is 1320909899. The reversal of 1320909879 is 9789090231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320909879 - 2³ = 1320909871 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 (1320909871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5949934 + ... + 5950155.

It is an arithmetic number, because the mean of its divisors is an integer number (226101710).

Almost surely, 2^1320909879 is an apocalyptic number.

1320909879 is a deficient number, since it is larger than the sum of its proper divisors (487903801).

1320909879 is a wasteful number, since it uses less digits than its factorization.

1320909879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900129.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 1320909879 is about 36344.3238897080. The cubic root of 1320909879 is about 1097.2132985715.

The spelling of 1320909879 in words is "one billion, three hundred twenty million, nine hundred nine thousand, eight hundred seventy-nine".