3957747 has 8 divisors (see below), whose sum is σ = 5315520. Its totient is φ = 2619240.

The previous prime is 3957743. The next prime is 3957749. The reversal of 3957747 is 7477593.

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

It is not a de Polignac number, because 3957747 - 2² = 3957743 is a prime.

It is a super-2 number, since 2×3957747² = 31327522632018, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3957699 and 3957708.

It is not an unprimeable number, because it can be changed into a prime (3957743) 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, 4329 + ... + 5162.

It is an arithmetic number, because the mean of its divisors is an integer number (664440).

Almost surely, 2^3957747 is an apocalyptic number.

3957747 is a deficient number, since it is larger than the sum of its proper divisors (1357773).

3957747 is a wasteful number, since it uses less digits than its factorization.

3957747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633.

The product of its digits is 185220, while the sum is 42.

The square root of 3957747 is about 1989.4087061235. The cubic root of 3957747 is about 158.1791883623.

The spelling of 3957747 in words is "three million, nine hundred fifty-seven thousand, seven hundred forty-seven".