1523979 has 12 divisors (see below), whose sum is σ = 2277600. Its totient is φ = 980784.

The previous prime is 1523969. The next prime is 1523981. The reversal of 1523979 is 9793251.

It is not a de Polignac number, because 1523979 - 2¹² = 1519883 is a prime.

1523979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1523939) 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, 2659 + ... + 3180.

It is an arithmetic number, because the mean of its divisors is an integer number (189800).

2^1523979 is an apocalyptic number.

1523979 is a deficient number, since it is larger than the sum of its proper divisors (753621).

1523979 is a wasteful number, since it uses less digits than its factorization.

1523979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874 (or 5871 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 1523979 is about 1234.4954434910. The cubic root of 1523979 is about 115.0781825005.

The spelling of 1523979 in words is "one million, five hundred twenty-three thousand, nine hundred seventy-nine".