3957858 has 12 divisors (see below), whose sum is σ = 8575398. Its totient is φ = 1319280.

The previous prime is 3957857. The next prime is 3957859. The reversal of 3957858 is 8587593.

It is an interprime number because it is at equal distance from previous prime (3957857) and next prime (3957859).

It can be written as a sum of positive squares in only one way, i.e., 2732409 + 1225449 = 1653^2 + 1107^2 .

It is not an unprimeable number, because it can be changed into a prime (3957857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109923 + ... + 109958.

Almost surely, 2^3957858 is an apocalyptic number.

3957858 is an abundant number, since it is smaller than the sum of its proper divisors (4617540).

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

3957858 is a wasteful number, since it uses less digits than its factorization.

3957858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219889 (or 219886 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 3957858 is about 1989.4366036645. The cubic root of 3957858 is about 158.1806671267.

The spelling of 3957858 in words is "three million, nine hundred fifty-seven thousand, eight hundred fifty-eight".