8394512501 has 4 divisors (see below), whose sum is σ = 8888307372. Its totient is φ = 7900717632.

The previous prime is 8394512461. The next prime is 8394512509. The reversal of 8394512501 is 1052154938.

It is a happy number.

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 5053788100 + 3340724401 = 71090^2 + 57799^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8394512501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8394512509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246897410 + ... + 246897443.

It is an arithmetic number, because the mean of its divisors is an integer number (2222076843).

Almost surely, 2^8394512501 is an apocalyptic number.

It is an amenable number.

8394512501 is a deficient number, since it is larger than the sum of its proper divisors (493794871).

8394512501 is a wasteful number, since it uses less digits than its factorization.

8394512501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493794870.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 8394512501 is about 91621.5722469332. The cubic root of 8394512501 is about 2032.3499605367.

The spelling of 8394512501 in words is "eight billion, three hundred ninety-four million, five hundred twelve thousand, five hundred one".