2478199 has 4 divisors (see below), whose sum is σ = 2489536. Its totient is φ = 2466864.

The previous prime is 2478187. The next prime is 2478211. The reversal of 2478199 is 9918742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9918742 = 2 ⋅4959371.

It is an interprime number because it is at equal distance from previous prime (2478187) and next prime (2478211).

It is a cyclic number.

It is not a de Polignac number, because 2478199 - 2¹⁹ = 1953911 is a prime.

It is a super-2 number, since 2×2478199² = 12282940567202, 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 (2478899) 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, 5334 + ... + 5779.

It is an arithmetic number, because the mean of its divisors is an integer number (622384).

2^2478199 is an apocalyptic number.

2478199 is a deficient number, since it is larger than the sum of its proper divisors (11337).

2478199 is a wasteful number, since it uses less digits than its factorization.

2478199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11336.

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

The square root of 2478199 is about 1574.2296528779. The cubic root of 2478199 is about 135.3252150134.

The spelling of 2478199 in words is "two million, four hundred seventy-eight thousand, one hundred ninety-nine".