69044939 has 4 divisors (see below), whose sum is σ = 73106424. Its totient is φ = 64983456.

The previous prime is 69044929. The next prime is 69044953. The reversal of 69044939 is 93944096.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 69044939 - 2²⁰ = 67996363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69044939.

It is not an unprimeable number, because it can be changed into a prime (69044909) 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, 2030717 + ... + 2030750.

It is an arithmetic number, because the mean of its divisors is an integer number (18276606).

Almost surely, 2^69044939 is an apocalyptic number.

69044939 is a deficient number, since it is larger than the sum of its proper divisors (4061485).

69044939 is a wasteful number, since it uses less digits than its factorization.

69044939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061484.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 69044939 is about 8309.3284325510. The cubic root of 69044939 is about 410.2456172555.

The spelling of 69044939 in words is "sixty-nine million, forty-four thousand, nine hundred thirty-nine".