1979527 has 4 divisors (see below), whose sum is σ = 2159496. Its totient is φ = 1799560.

The previous prime is 1979507. The next prime is 1979539. The reversal of 1979527 is 7259791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1979527 - 2⁷ = 1979399 is a prime.

It is a super-3 number, since 3×1979527³ = 23270490843733308549, which contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1979527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979507) 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 3 ways as a sum of consecutive naturals, for example, 89968 + ... + 89989.

It is an arithmetic number, because the mean of its divisors is an integer number (539874).

2^1979527 is an apocalyptic number.

1979527 is a deficient number, since it is larger than the sum of its proper divisors (179969).

1979527 is a wasteful number, since it uses less digits than its factorization.

1979527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179968.

The product of its digits is 39690, while the sum is 40.

The square root of 1979527 is about 1406.9566446767. The cubic root of 1979527 is about 125.5607236178.

The spelling of 1979527 in words is "one million, nine hundred seventy-nine thousand, five hundred twenty-seven".