11649838 has 4 divisors (see below), whose sum is σ = 17474760. Its totient is φ = 5824918.

The previous prime is 11649829. The next prime is 11649853. The reversal of 11649838 is 83894611.

11649838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83894611 = 797 ⋅105263.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11649838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2912458 + ... + 2912461.

It is an arithmetic number, because the mean of its divisors is an integer number (4368690).

Almost surely, 2^11649838 is an apocalyptic number.

11649838 is a deficient number, since it is larger than the sum of its proper divisors (5824922).

11649838 is an equidigital number, since it uses as much as digits as its factorization.

11649838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5824921.

The product of its digits is 41472, while the sum is 40.

The square root of 11649838 is about 3413.1859017639. The cubic root of 11649838 is about 226.6939668194.

The spelling of 11649838 in words is "eleven million, six hundred forty-nine thousand, eight hundred thirty-eight".