3978459 has 12 divisors (see below), whose sum is σ = 6084936. Its totient is φ = 2496192.

The previous prime is 3978451. The next prime is 3978473. The reversal of 3978459 is 9548793.

It is not a de Polignac number, because 3978459 - 2³ = 3978451 is a prime.

3978459 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3978451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12849 + ... + 13154.

It is an arithmetic number, because the mean of its divisors is an integer number (507078).

Almost surely, 2^3978459 is an apocalyptic number.

3978459 is a deficient number, since it is larger than the sum of its proper divisors (2106477).

3978459 is a wasteful number, since it uses less digits than its factorization.

3978459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026 (or 26023 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 3978459 is about 1994.6074801825. The cubic root of 3978459 is about 158.4546404317.

The spelling of 3978459 in words is "three million, nine hundred seventy-eight thousand, four hundred fifty-nine".