11979530 has 8 divisors (see below), whose sum is σ = 21563172. Its totient is φ = 4791808.

The previous prime is 11979511. The next prime is 11979553. The reversal of 11979530 is 3597911.

11979530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11485321 + 494209 = 3389^2 + 703^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598967 + ... + 598986.

Almost surely, 2^11979530 is an apocalyptic number.

11979530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11979530 is a deficient number, since it is larger than the sum of its proper divisors (9583642).

11979530 is a wasteful number, since it uses less digits than its factorization.

11979530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197960.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 11979530 is about 3461.1457640498. The cubic root of 11979530 is about 228.8125949715.

The spelling of 11979530 in words is "eleven million, nine hundred seventy-nine thousand, five hundred thirty".