11978039 has 2 divisors, whose sum is σ = 11978040. Its totient is φ = 11978038.

The previous prime is 11978033. The next prime is 11978041. The reversal of 11978039 is 93087911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11978039 - 2⁴ = 11978023 is a prime.

Together with 11978041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11977993 and 11978011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11978033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5989019 + 5989020.

It is an arithmetic number, because the mean of its divisors is an integer number (5989020).

Almost surely, 2^11978039 is an apocalyptic number.

11978039 is a deficient number, since it is larger than the sum of its proper divisors (1).

11978039 is an equidigital number, since it uses as much as digits as its factorization.

11978039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11978039 is about 3460.9303662455. The cubic root of 11978039 is about 228.8031017294.

The spelling of 11978039 in words is "eleven million, nine hundred seventy-eight thousand, thirty-nine".