2478209398 has 12 divisors (see below), whose sum is σ = 4324222692. Its totient is φ = 1062089700.

The previous prime is 2478209339. The next prime is 2478209401. The reversal of 2478209398 is 8939028742.

It is a super-2 number, since 2×2478209398² = 12283043640671044808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12643828 + ... + 12644023.

It is an arithmetic number, because the mean of its divisors is an integer number (360351891).

Almost surely, 2^2478209398 is an apocalyptic number.

2478209398 is a deficient number, since it is larger than the sum of its proper divisors (1846013294).

2478209398 is a wasteful number, since it uses less digits than its factorization.

2478209398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25287867 (or 25287860 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 2478209398 is about 49781.6170689543. The cubic root of 2478209398 is about 1353.2540427848.

The spelling of 2478209398 in words is "two billion, four hundred seventy-eight million, two hundred nine thousand, three hundred ninety-eight".