3967857436 has 24 divisors (see below), whose sum is σ = 7052088960. Its totient is φ = 1953058800.

The previous prime is 3967857433. The next prime is 3967857463. The reversal of 3967857436 is 6347587693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967857433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186135 + ... + 206353.

It is an arithmetic number, because the mean of its divisors is an integer number (293837040).

Almost surely, 2^3967857436 is an apocalyptic number.

It is an amenable number.

3967857436 is a deficient number, since it is larger than the sum of its proper divisors (3084231524).

3967857436 is a wasteful number, since it uses less digits than its factorization.

3967857436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20985 (or 20983 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 58.

The square root of 3967857436 is about 62990.9313790485. The cubic root of 3967857436 is about 1583.1376835356.

The spelling of 3967857436 in words is "three billion, nine hundred sixty-seven million, eight hundred fifty-seven thousand, four hundred thirty-six".