3964478845 has 8 divisors (see below), whose sum is σ = 4767066720. Its totient is φ = 3165121680.

The previous prime is 3964478831. The next prime is 3964478851. The reversal of 3964478845 is 5488744693.

It is a happy number.

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

It is not a de Polignac number, because 3964478845 - 2³¹ = 1816995197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3964478845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804975 + ... + 809884.

It is an arithmetic number, because the mean of its divisors is an integer number (595883340).

Almost surely, 2^3964478845 is an apocalyptic number.

It is an amenable number.

3964478845 is a deficient number, since it is larger than the sum of its proper divisors (802587875).

3964478845 is a wasteful number, since it uses less digits than its factorization.

3964478845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615355.

The product of its digits is 23224320, while the sum is 58.

The square root of 3964478845 is about 62964.1075931359. The cubic root of 3964478845 is about 1582.6882139602.

The spelling of 3964478845 in words is "three billion, nine hundred sixty-four million, four hundred seventy-eight thousand, eight hundred forty-five".