3947923152 has 50 divisors (see below), whose sum is σ = 11426438738. Its totient is φ = 1315973952.

The previous prime is 3947923139. The next prime is 3947923171. The reversal of 3947923152 is 2513297493.

3947923152 is a `hidden beast` number, since 3 + 9 + 479 + 23 + 152 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2912113296 + 1035809856 = 53964^2 + 32184^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3947923098 and 3947923107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1521823 + ... + 1524414.

Almost surely, 2^3947923152 is an apocalyptic number.

It is an amenable number.

3947923152 is an abundant number, since it is smaller than the sum of its proper divisors (7478515586).

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

3947923152 is a wasteful number, since it uses less digits than its factorization.

3947923152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046257 (or 3046242 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 3947923152 is about 62832.5007619464. The cubic root of 3947923152 is about 1580.4820341980.

The spelling of 3947923152 in words is "three billion, nine hundred forty-seven million, nine hundred twenty-three thousand, one hundred fifty-two".