8406399074 has 8 divisors (see below), whose sum is σ = 12734446428. Its totient is φ = 4161583600.

The previous prime is 8406399019. The next prime is 8406399103. The reversal of 8406399074 is 4709936048.

It can be written as a sum of positive squares in 2 ways, for example, as 6906773449 + 1499625625 = 83107^2 + 38725^2 .

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, 20807717 + ... + 20808120.

Almost surely, 2^8406399074 is an apocalyptic number.

8406399074 is a deficient number, since it is larger than the sum of its proper divisors (4328047354).

8406399074 is a wasteful number, since it uses less digits than its factorization.

8406399074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41615940.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 8406399074 is about 91686.4170638159. The cubic root of 8406399074 is about 2033.3087727273.

The spelling of 8406399074 in words is "eight billion, four hundred six million, three hundred ninety-nine thousand, seventy-four".