11878897 has 4 divisors (see below), whose sum is σ = 11888100. Its totient is φ = 11869696.

The previous prime is 11878891. The next prime is 11878927. The reversal of 11878897 is 79887811.

11878897 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79887811 = 17 ⋅4699283.

It can be written as a sum of positive squares in 2 ways, for example, as 829921 + 11048976 = 911^2 + 3324^2 .

It is a cyclic number.

It is not a de Polignac number, because 11878897 - 2¹¹ = 11876849 is a prime.

It is a super-2 number, since 2×11878897² = 282216387873218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11878897.

It is not an unprimeable number, because it can be changed into a prime (11878891) 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, 2272 + ... + 5377.

It is an arithmetic number, because the mean of its divisors is an integer number (2972025).

Almost surely, 2^11878897 is an apocalyptic number.

It is an amenable number.

11878897 is a deficient number, since it is larger than the sum of its proper divisors (9203).

11878897 is an equidigital number, since it uses as much as digits as its factorization.

11878897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9202.

The product of its digits is 225792, while the sum is 49.

The square root of 11878897 is about 3446.5775778299. The cubic root of 11878897 is about 228.1700857157.

The spelling of 11878897 in words is "eleven million, eight hundred seventy-eight thousand, eight hundred ninety-seven".