3958645 has 16 divisors (see below), whose sum is σ = 5132160. Its totient is φ = 2922304.

The previous prime is 3958627. The next prime is 3958657. The reversal of 3958645 is 5468593.

It is a cyclic number.

It is not a de Polignac number, because 3958645 - 2¹⁵ = 3925877 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3958598 and 3958607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2742 + ... + 3928.

It is an arithmetic number, because the mean of its divisors is an integer number (320760).

Almost surely, 2^3958645 is an apocalyptic number.

It is an amenable number.

3958645 is a deficient number, since it is larger than the sum of its proper divisors (1173515).

3958645 is a wasteful number, since it uses less digits than its factorization.

3958645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its digits is 129600, while the sum is 40.

The square root of 3958645 is about 1989.6343885247. The cubic root of 3958645 is about 158.1911509065.

The spelling of 3958645 in words is "three million, nine hundred fifty-eight thousand, six hundred forty-five".