69440023 has 4 divisors (see below), whose sum is σ = 69666520. Its totient is φ = 69213528.

The previous prime is 69440011. The next prime is 69440029. The reversal of 69440023 is 32004496.

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 69440023 - 2⁹ = 69439511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69439973 and 69440000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69440029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112788 + ... + 113401.

It is an arithmetic number, because the mean of its divisors is an integer number (17416630).

Almost surely, 2^69440023 is an apocalyptic number.

69440023 is a deficient number, since it is larger than the sum of its proper divisors (226497).

69440023 is a wasteful number, since it uses less digits than its factorization.

69440023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226496.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 69440023 is about 8333.0680424439. The cubic root of 69440023 is about 411.0266221609.

The spelling of 69440023 in words is "sixty-nine million, four hundred forty thousand, twenty-three".