1979469 has 6 divisors (see below), whose sum is σ = 2859246. Its totient is φ = 1319640.

The previous prime is 1979441. The next prime is 1979473. The reversal of 1979469 is 9649791.

It can be written as a sum of positive squares in only one way, i.e., 1790244 + 189225 = 1338^2 + 435^2 .

It is not a de Polignac number, because 1979469 - 2⁵ = 1979437 is a prime.

It is a super-2 number, since 2×1979469² = 7836595043922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109962 + ... + 109979.

It is an arithmetic number, because the mean of its divisors is an integer number (476541).

2^1979469 is an apocalyptic number.

It is an amenable number.

1979469 is a deficient number, since it is larger than the sum of its proper divisors (879777).

1979469 is a wasteful number, since it uses less digits than its factorization.

1979469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219947 (or 219944 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 1979469 is about 1406.9360326610. The cubic root of 1979469 is about 125.5594972991.

The spelling of 1979469 in words is "one million, nine hundred seventy-nine thousand, four hundred sixty-nine".