7904947646 has 8 divisors (see below), whose sum is σ = 11876957760. Its totient is φ = 3945961728.

The previous prime is 7904947637. The next prime is 7904947651. The reversal of 7904947646 is 6467494097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7904947591 and 7904947600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3254531 + ... + 3256958.

It is an arithmetic number, because the mean of its divisors is an integer number (1484619720).

Almost surely, 2^7904947646 is an apocalyptic number.

7904947646 is a deficient number, since it is larger than the sum of its proper divisors (3972010114).

7904947646 is a wasteful number, since it uses less digits than its factorization.

7904947646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512098.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The square root of 7904947646 is about 88909.7724999901. The cubic root of 7904947646 is about 1992.0473904133.

The spelling of 7904947646 in words is "seven billion, nine hundred four million, nine hundred forty-seven thousand, six hundred forty-six".