526489949 has 4 divisors (see below), whose sum is σ = 557459964. Its totient is φ = 495519936.

The previous prime is 526489937. The next prime is 526489961. The reversal of 526489949 is 949984625.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (526489937) and next prime (526489961).

It can be written as a sum of positive squares in 2 ways, for example, as 273902500 + 252587449 = 16550^2 + 15893^2 .

It is a cyclic number.

It is not a de Polignac number, because 526489949 - 2⁴ = 526489933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 526489894 and 526489903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526489349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15484982 + ... + 15485015.

It is an arithmetic number, because the mean of its divisors is an integer number (139364991).

Almost surely, 2^526489949 is an apocalyptic number.

It is an amenable number.

526489949 is a deficient number, since it is larger than the sum of its proper divisors (30970015).

526489949 is a wasteful number, since it uses less digits than its factorization.

526489949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30970014.

The product of its digits is 5598720, while the sum is 56.

The square root of 526489949 is about 22945.3687919807. The cubic root of 526489949 is about 807.4767534452.

The spelling of 526489949 in words is "five hundred twenty-six million, four hundred eighty-nine thousand, nine hundred forty-nine".