11878849 has 4 divisors (see below), whose sum is σ = 11944660. Its totient is φ = 11813040.

The previous prime is 11878847. The next prime is 11878861. The reversal of 11878849 is 94887811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2050624 + 9828225 = 1432^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 11878849 - 2¹ = 11878847 is a prime.

It is a super-2 number, since 2×11878849² = 282214107129602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11878799 and 11878808.

It is not an unprimeable number, because it can be changed into a prime (11878847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32634 + ... + 32995.

It is an arithmetic number, because the mean of its divisors is an integer number (2986165).

Almost surely, 2^11878849 is an apocalyptic number.

It is an amenable number.

11878849 is a deficient number, since it is larger than the sum of its proper divisors (65811).

11878849 is an equidigital number, since it uses as much as digits as its factorization.

11878849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65810.

The product of its digits is 129024, while the sum is 46.

The square root of 11878849 is about 3446.5706143934. The cubic root of 11878849 is about 228.1697783870.

The spelling of 11878849 in words is "eleven million, eight hundred seventy-eight thousand, eight hundred forty-nine".