11979603 has 8 divisors (see below), whose sum is σ = 17747600. Its totient is φ = 7986384.

The previous prime is 11979599. The next prime is 11979631. The reversal of 11979603 is 30697911.

It is not a de Polignac number, because 11979603 - 2² = 11979599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11975603) 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, 221818 + ... + 221871.

It is an arithmetic number, because the mean of its divisors is an integer number (2218450).

Almost surely, 2^11979603 is an apocalyptic number.

11979603 is a deficient number, since it is larger than the sum of its proper divisors (5767997).

11979603 is an equidigital number, since it uses as much as digits as its factorization.

11979603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443698 (or 443692 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 11979603 is about 3461.1563096746. The cubic root of 11979603 is about 228.8130597445.

The spelling of 11979603 in words is "eleven million, nine hundred seventy-nine thousand, six hundred three".