69439085 has 4 divisors (see below), whose sum is σ = 83326908. Its totient is φ = 55551264.

The previous prime is 69439081. The next prime is 69439103. The reversal of 69439085 is 58093496.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25110121 + 44328964 = 5011^2 + 6658^2 .

It is a cyclic number.

It is not a de Polignac number, because 69439085 - 2² = 69439081 is a prime.

It is a super-3 number, since 3×69439085³ (a number of 25 digits) contains 333 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 (69439081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6943904 + ... + 6943913.

It is an arithmetic number, because the mean of its divisors is an integer number (20831727).

Almost surely, 2^69439085 is an apocalyptic number.

It is an amenable number.

69439085 is a deficient number, since it is larger than the sum of its proper divisors (13887823).

69439085 is a wasteful number, since it uses less digits than its factorization.

69439085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13887822.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 69439085 is about 8333.0117604621. The cubic root of 69439085 is about 411.0247714284.

The spelling of 69439085 in words is "sixty-nine million, four hundred thirty-nine thousand, eighty-five".