398792378 has 8 divisors (see below), whose sum is σ = 598296672. Its totient is φ = 199360156.

The previous prime is 398792353. The next prime is 398792393. The reversal of 398792378 is 873297893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (74787084).

Almost surely, 2^398792378 is an apocalyptic number.

398792378 is a deficient number, since it is larger than the sum of its proper divisors (199504294).

398792378 is a wasteful number, since it uses less digits than its factorization.

398792378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36036.

The product of its digits is 4572288, while the sum is 56.

The square root of 398792378 is about 19969.7866288050. The cubic root of 398792378 is about 736.0640660303.

The spelling of 398792378 in words is "three hundred ninety-eight million, seven hundred ninety-two thousand, three hundred seventy-eight".