1979047 has 8 divisors (see below), whose sum is σ = 2340000. Its totient is φ = 1637664.

The previous prime is 1979039. The next prime is 1979051. The reversal of 1979047 is 7409791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1979047 - 2³ = 1979039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1978997 and 1979015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4672 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (292500).

2^1979047 is an apocalyptic number.

1979047 is a deficient number, since it is larger than the sum of its proper divisors (360953).

1979047 is an equidigital number, since it uses as much as digits as its factorization.

1979047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1979047 is about 1406.7860533855. The cubic root of 1979047 is about 125.5505740519.

Subtracting from 1979047 its product of nonzero digits (15876), we obtain a triangular number (1963171 = T₁₉₈₁).

The spelling of 1979047 in words is "one million, nine hundred seventy-nine thousand, forty-seven".