69809838 has 32 divisors (see below), whose sum is σ = 167965440. Its totient is φ = 18895680.

The previous prime is 69809809. The next prime is 69809843. The reversal of 69809838 is 83890896.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42943 + ... + 44538.

It is an arithmetic number, because the mean of its divisors is an integer number (5248920).

Almost surely, 2^69809838 is an apocalyptic number.

69809838 is an abundant number, since it is smaller than the sum of its proper divisors (98155602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69809838 is a wasteful number, since it uses less digits than its factorization.

69809838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87512.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 69809838 is about 8355.2281835986. The cubic root of 69809838 is about 411.7549954069.

The spelling of 69809838 in words is "sixty-nine million, eight hundred nine thousand, eight hundred thirty-eight".