8535479669 has 4 divisors (see below), whose sum is σ = 8535752940. Its totient is φ = 8535206400.

The previous prime is 8535479657. The next prime is 8535479681. The reversal of 8535479669 is 9669745358.

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 (8535479657) and next prime (8535479681).

It can be written as a sum of positive squares in 2 ways, for example, as 6591816100 + 1943663569 = 81190^2 + 44087^2 .

It is a cyclic number.

It is not a de Polignac number, because 8535479669 - 2⁸ = 8535479413 is a prime.

It is a super-2 number, since 2×8535479669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8535479609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82682 + ... + 154619.

It is an arithmetic number, because the mean of its divisors is an integer number (2133938235).

Almost surely, 2^8535479669 is an apocalyptic number.

It is an amenable number.

8535479669 is a deficient number, since it is larger than the sum of its proper divisors (273271).

8535479669 is a wasteful number, since it uses less digits than its factorization.

8535479669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273270.

The product of its digits is 48988800, while the sum is 62.

The square root of 8535479669 is about 92387.6597224976. The cubic root of 8535479669 is about 2043.6631342356.

The spelling of 8535479669 in words is "eight billion, five hundred thirty-five million, four hundred seventy-nine thousand, six hundred sixty-nine".