3978119 has 4 divisors (see below), whose sum is σ = 4212144. Its totient is φ = 3744096.

The previous prime is 3978113. The next prime is 3978167. The reversal of 3978119 is 9118793.

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 3978119 - 2⁸ = 3977863 is a prime.

It is a super-2 number, since 2×3978119² = 31650861556322, 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 (3978113) 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, 116987 + ... + 117020.

It is an arithmetic number, because the mean of its divisors is an integer number (1053036).

Almost surely, 2^3978119 is an apocalyptic number.

3978119 is a deficient number, since it is larger than the sum of its proper divisors (234025).

3978119 is a wasteful number, since it uses less digits than its factorization.

3978119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234024.

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

The square root of 3978119 is about 1994.5222485598. The cubic root of 3978119 is about 158.4501264467.

The spelling of 3978119 in words is "three million, nine hundred seventy-eight thousand, one hundred nineteen".