2478919 has 4 divisors (see below), whose sum is σ = 2482200. Its totient is φ = 2475640.

The previous prime is 2478899. The next prime is 2478937. The reversal of 2478919 is 9198742.

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.

It is a cyclic number.

It is not a de Polignac number, because 2478919 - 2⁹ = 2478407 is a prime.

It is a super-2 number, since 2×2478919² = 12290078817122, 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 (2472919) 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, 132 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (620550).

2^2478919 is an apocalyptic number.

2478919 is a deficient number, since it is larger than the sum of its proper divisors (3281).

2478919 is a wasteful number, since it uses less digits than its factorization.

2478919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280.

The product of its digits is 36288, while the sum is 40.

The square root of 2478919 is about 1574.4583195499. The cubic root of 2478919 is about 135.3383192503.

The spelling of 2478919 in words is "two million, four hundred seventy-eight thousand, nine hundred nineteen".