7989902966 has 4 divisors (see below), whose sum is σ = 11984854452. Its totient is φ = 3994951482.

The previous prime is 7989902959. The next prime is 7989902983. The reversal of 7989902966 is 6692099897.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997475740 + ... + 1997475743.

It is an arithmetic number, because the mean of its divisors is an integer number (2996213613).

Almost surely, 2^7989902966 is an apocalyptic number.

7989902966 is a deficient number, since it is larger than the sum of its proper divisors (3994951486).

7989902966 is a wasteful number, since it uses less digits than its factorization.

7989902966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994951485.

The product of its (nonzero) digits is 26453952, while the sum is 65.

The square root of 7989902966 is about 89386.2571428069. The cubic root of 7989902966 is about 1999.1582262582.

The spelling of 7989902966 in words is "seven billion, nine hundred eighty-nine million, nine hundred two thousand, nine hundred sixty-six".