8338172077 has 4 divisors (see below), whose sum is σ = 8338856220. Its totient is φ = 8337487936.

The previous prime is 8338172071. The next prime is 8338172107. The reversal of 8338172077 is 7702718338.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3085691401 + 5252480676 = 55549^2 + 72474^2 .

It is a cyclic number.

It is not a de Polignac number, because 8338172077 - 2³¹ = 6190688429 is a prime.

It is a super-2 number, since 2×8338172077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8338172071) 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, 323452 + ... + 348277.

It is an arithmetic number, because the mean of its divisors is an integer number (2084714055).

Almost surely, 2^8338172077 is an apocalyptic number.

It is an amenable number.

8338172077 is a deficient number, since it is larger than the sum of its proper divisors (684143).

8338172077 is a wasteful number, since it uses less digits than its factorization.

8338172077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684142.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 8338172077 is about 91313.5919619856. The cubic root of 8338172077 is about 2027.7929921513.

The spelling of 8338172077 in words is "eight billion, three hundred thirty-eight million, one hundred seventy-two thousand, seventy-seven".