3978793 has 16 divisors (see below), whose sum is σ = 5112576. Its totient is φ = 3009600.

The previous prime is 3978781. The next prime is 3978803.

3978793 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 3978793 - 2⁵ = 3978761 is a prime.

Its product of digits (285768) is a multiple of the sum of its prime divisors (1944).

It is not an unprimeable number, because it can be changed into a prime (3978743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (319536).

Almost surely, 2^3978793 is an apocalyptic number.

It is an amenable number.

3978793 is a deficient number, since it is larger than the sum of its proper divisors (1133783).

3978793 is a wasteful number, since it uses less digits than its factorization.

3978793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944.

The product of its digits is 285768, while the sum is 46.

The square root of 3978793 is about 1994.6912041717. The cubic root of 3978793 is about 158.4590745077.

The spelling of 3978793 in words is "three million, nine hundred seventy-eight thousand, seven hundred ninety-three".