199240478 has 8 divisors (see below), whose sum is σ = 301820040. Its totient is φ = 98633800.

The previous prime is 199240477. The next prime is 199240501. The reversal of 199240478 is 874042991.

199240478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199240477) 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, 492968 + ... + 493371.

It is an arithmetic number, because the mean of its divisors is an integer number (37727505).

Almost surely, 2^199240478 is an apocalyptic number.

199240478 is a deficient number, since it is larger than the sum of its proper divisors (102579562).

199240478 is a wasteful number, since it uses less digits than its factorization.

199240478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986442.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 199240478 is about 14115.2569229185. The cubic root of 199240478 is about 584.0623232887.

The spelling of 199240478 in words is "one hundred ninety-nine million, two hundred forty thousand, four hundred seventy-eight".