8702421979 has 4 divisors (see below), whose sum is σ = 9080788176. Its totient is φ = 8324055784.

The previous prime is 8702421977. The next prime is 8702421983. The reversal of 8702421979 is 9791242078.

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

It is a cyclic number.

It is not a de Polignac number, because 8702421979 - 2¹ = 8702421977 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8702421977) 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, 189183064 + ... + 189183109.

It is an arithmetic number, because the mean of its divisors is an integer number (2270197044).

Almost surely, 2^8702421979 is an apocalyptic number.

8702421979 is a deficient number, since it is larger than the sum of its proper divisors (378366197).

8702421979 is a wasteful number, since it uses less digits than its factorization.

8702421979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378366196.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 8702421979 is about 93286.7727976480. The cubic root of 8702421979 is about 2056.9009532380.

The spelling of 8702421979 in words is "eight billion, seven hundred two million, four hundred twenty-one thousand, nine hundred seventy-nine".