8338478402 has 32 divisors (see below), whose sum is σ = 13287682800. Its totient is φ = 3917491200.

The previous prime is 8338478399. The next prime is 8338478411. The reversal of 8338478402 is 2048748338.

It can be written as a sum of positive squares in 8 ways, for example, as 26327161 + 8312151241 = 5131^2 + 91171^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996974 + ... + 1005302.

Almost surely, 2^8338478402 is an apocalyptic number.

8338478402 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

8338478402 is a deficient number, since it is larger than the sum of its proper divisors (4949204398).

8338478402 is a wasteful number, since it uses less digits than its factorization.

8338478402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The square root of 8338478402 is about 91315.2692708071. The cubic root of 8338478402 is about 2027.8178239760.

The spelling of 8338478402 in words is "eight billion, three hundred thirty-eight million, four hundred seventy-eight thousand, four hundred two".