11969538 has 16 divisors (see below), whose sum is σ = 27359040. Its totient is φ = 3419856.

The previous prime is 11969519. The next prime is 11969539. The reversal of 11969538 is 83596911.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 284989 = 11969538 / (1 + 1 + 9 + 6 + 9 + 5 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 11969538.

It is not an unprimeable number, because it can be changed into a prime (11969539) 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, 142453 + ... + 142536.

It is an arithmetic number, because the mean of its divisors is an integer number (1709940).

Almost surely, 2^11969538 is an apocalyptic number.

11969538 is an abundant number, since it is smaller than the sum of its proper divisors (15389502).

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

11969538 is a wasteful number, since it uses less digits than its factorization.

11969538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285001.

The product of its digits is 58320, while the sum is 42.

The square root of 11969538 is about 3459.7020102893. The cubic root of 11969538 is about 228.7489605495.

The spelling of 11969538 in words is "eleven million, nine hundred sixty-nine thousand, five hundred thirty-eight".