8783925121 has 4 divisors (see below), whose sum is σ = 8864511700. Its totient is φ = 8703338544.

The previous prime is 8783925119. The next prime is 8783925149. The reversal of 8783925121 is 1215293878.

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 7382246400 + 1401678721 = 85920^2 + 37439^2 .

It is a cyclic number.

It is not a de Polignac number, because 8783925121 - 2¹ = 8783925119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8783925151) 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, 40293126 + ... + 40293343.

It is an arithmetic number, because the mean of its divisors is an integer number (2216127925).

Almost surely, 2^8783925121 is an apocalyptic number.

It is an amenable number.

8783925121 is a deficient number, since it is larger than the sum of its proper divisors (80586579).

8783925121 is a wasteful number, since it uses less digits than its factorization.

8783925121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80586578.

The product of its digits is 241920, while the sum is 46.

The square root of 8783925121 is about 93722.5966402980. The cubic root of 8783925121 is about 2063.3023602978.

The spelling of 8783925121 in words is "eight billion, seven hundred eighty-three million, nine hundred twenty-five thousand, one hundred twenty-one".