3994767520 has 24 divisors (see below), whose sum is σ = 9437638644. Its totient is φ = 1597906944.

The previous prime is 3994767437. The next prime is 3994767521. The reversal of 3994767520 is 257674993.

It can be written as a sum of positive squares in 2 ways, for example, as 3994745616 + 21904 = 63204^2 + 148^2 .

It is not an unprimeable number, because it can be changed into a prime (3994767521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12483489 + ... + 12483808.

Almost surely, 2^3994767520 is an apocalyptic number.

It is an amenable number.

3994767520 is an abundant number, since it is smaller than the sum of its proper divisors (5442871124).

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

3994767520 is a wasteful number, since it uses less digits than its factorization.

3994767520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24967312 (or 24967304 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 52.

The square root of 3994767520 is about 63204.1732799346. The cubic root of 3994767520 is about 1586.7085795800.

The spelling of 3994767520 in words is "three billion, nine hundred ninety-four million, seven hundred sixty-seven thousand, five hundred twenty".