7948999836 has 36 divisors (see below), whose sum is σ = 20277657400. Its totient is φ = 2625356448.

The previous prime is 7948999831. The next prime is 7948999897. The reversal of 7948999836 is 6389998497.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7948999831) 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 11 ways as a sum of consecutive naturals, for example, 1008946 + ... + 1016793.

Almost surely, 2^7948999836 is an apocalyptic number.

It is an amenable number.

7948999836 is an abundant number, since it is smaller than the sum of its proper divisors (12328657564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7948999836 is a wasteful number, since it uses less digits than its factorization.

7948999836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025858 (or 2025853 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The square root of 7948999836 is about 89157.1636830154. The cubic root of 7948999836 is about 1995.7409229027.

The spelling of 7948999836 in words is "seven billion, nine hundred forty-eight million, nine hundred ninety-nine thousand, eight hundred thirty-six".