11959540 has 24 divisors (see below), whose sum is σ = 26208000. Its totient is φ = 4575648.

The previous prime is 11959489. The next prime is 11959543. The reversal of 11959540 is 4595911.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11959496 and 11959505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11959543) 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, 12540 + ... + 13459.

It is an arithmetic number, because the mean of its divisors is an integer number (1092000).

Almost surely, 2^11959540 is an apocalyptic number.

11959540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11959540 is an abundant number, since it is smaller than the sum of its proper divisors (14248460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11959540 is a wasteful number, since it uses less digits than its factorization.

11959540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26031 (or 26029 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 11959540 is about 3458.2567863014. The cubic root of 11959540 is about 228.6852524604.

The spelling of 11959540 in words is "eleven million, nine hundred fifty-nine thousand, five hundred forty".