8216904959 has 4 divisors (see below), whose sum is σ = 8407995816. Its totient is φ = 8025814104.

The previous prime is 8216904947. The next prime is 8216904973. The reversal of 8216904959 is 9594096128.

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 8216904959 - 2¹² = 8216900863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8216904959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216904929) 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, 95545364 + ... + 95545449.

It is an arithmetic number, because the mean of its divisors is an integer number (2101998954).

Almost surely, 2^8216904959 is an apocalyptic number.

8216904959 is a deficient number, since it is larger than the sum of its proper divisors (191090857).

8216904959 is a wasteful number, since it uses less digits than its factorization.

8216904959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191090856.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 8216904959 is about 90647.1453439103. The cubic root of 8216904959 is about 2017.9144700269.

The spelling of 8216904959 in words is "eight billion, two hundred sixteen million, nine hundred four thousand, nine hundred fifty-nine".