827489747 has 8 divisors (see below), whose sum is σ = 948136800. Its totient is φ = 707451264.

The previous prime is 827489717. The next prime is 827489771. The reversal of 827489747 is 747984728.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 827489747 - 2⁸ = 827489491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 827489692 and 827489701.

It is not an unprimeable number, because it can be changed into a prime (827489717) 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 7 ways as a sum of consecutive naturals, for example, 149222 + ... + 154667.

It is an arithmetic number, because the mean of its divisors is an integer number (118517100).

Almost surely, 2^827489747 is an apocalyptic number.

827489747 is a deficient number, since it is larger than the sum of its proper divisors (120647053).

827489747 is a wasteful number, since it uses less digits than its factorization.

827489747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304285.

The product of its digits is 6322176, while the sum is 56.

The square root of 827489747 is about 28766.1215147263. The cubic root of 827489747 is about 938.8312572016.

The spelling of 827489747 in words is "eight hundred twenty-seven million, four hundred eighty-nine thousand, seven hundred forty-seven".