7947244078 has 4 divisors (see below), whose sum is σ = 11920866120. Its totient is φ = 3973622038.

The previous prime is 7947244043. The next prime is 7947244087. The reversal of 7947244078 is 8704427497.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986811018 + ... + 1986811021.

It is an arithmetic number, because the mean of its divisors is an integer number (2980216530).

Almost surely, 2^7947244078 is an apocalyptic number.

7947244078 is a deficient number, since it is larger than the sum of its proper divisors (3973622042).

7947244078 is a wasteful number, since it uses less digits than its factorization.

7947244078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973622041.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The square root of 7947244078 is about 89147.3167178912. The cubic root of 7947244078 is about 1995.5939737609.

The spelling of 7947244078 in words is "seven billion, nine hundred forty-seven million, two hundred forty-four thousand, seventy-eight".