1979247 has 16 divisors (see below), whose sum is σ = 2752640. Its totient is φ = 1264032.

The previous prime is 1979233. The next prime is 1979251. The reversal of 1979247 is 7429791.

It is not a de Polignac number, because 1979247 - 2⁶ = 1979183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979207) 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, 8529 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (172040).

2^1979247 is an apocalyptic number.

1979247 is a deficient number, since it is larger than the sum of its proper divisors (773393).

1979247 is a wasteful number, since it uses less digits than its factorization.

1979247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 31752, while the sum is 39.

The square root of 1979247 is about 1406.8571356040. The cubic root of 1979247 is about 125.5548032371.

The spelling of 1979247 in words is "one million, nine hundred seventy-nine thousand, two hundred forty-seven".