11978119 has 4 divisors (see below), whose sum is σ = 12088120. Its totient is φ = 11868120.

The previous prime is 11978117. The next prime is 11978129. The reversal of 11978119 is 91187911.

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

It is a cyclic number.

It is not a de Polignac number, because 11978119 - 2¹ = 11978117 is a prime.

It is a super-2 number, since 2×11978119² = 286950669556322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54837 + ... + 55054.

It is an arithmetic number, because the mean of its divisors is an integer number (3022030).

Almost surely, 2^11978119 is an apocalyptic number.

11978119 is a deficient number, since it is larger than the sum of its proper divisors (110001).

11978119 is a wasteful number, since it uses less digits than its factorization.

11978119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110000.

The product of its digits is 4536, while the sum is 37.

The square root of 11978119 is about 3460.9419238121. The cubic root of 11978119 is about 228.8036111118.

It can be divided in two parts, 1197 and 8119, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 11978119 in words is "eleven million, nine hundred seventy-eight thousand, one hundred nineteen".