3958915 has 4 divisors (see below), whose sum is σ = 4750704. Its totient is φ = 3167128.

The previous prime is 3958891. The next prime is 3958931. The reversal of 3958915 is 5198593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5198593 = 271 ⋅19183.

It is a cyclic number.

It is not a de Polignac number, because 3958915 - 2⁵ = 3958883 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395887 + ... + 395896.

It is an arithmetic number, because the mean of its divisors is an integer number (1187676).

Almost surely, 2^3958915 is an apocalyptic number.

3958915 is a deficient number, since it is larger than the sum of its proper divisors (791789).

3958915 is an equidigital number, since it uses as much as digits as its factorization.

3958915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791788.

The product of its digits is 48600, while the sum is 40.

The square root of 3958915 is about 1989.7022390297. The cubic root of 3958915 is about 158.1947473087.

The spelling of 3958915 in words is "three million, nine hundred fifty-eight thousand, nine hundred fifteen".