69443945 has 8 divisors (see below), whose sum is σ = 83799360. Its totient is φ = 55244080.

The previous prime is 69443911. The next prime is 69443947. The reversal of 69443945 is 54934496.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69443945 - 2¹⁰ = 69442921 is a prime.

It is a super-2 number, since 2×69443945² = 9644922994326050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69443896 and 69443905.

It is not an unprimeable number, because it can be changed into a prime (69443947) 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 7 ways as a sum of consecutive naturals, for example, 37901 + ... + 39690.

It is an arithmetic number, because the mean of its divisors is an integer number (10474920).

Almost surely, 2^69443945 is an apocalyptic number.

It is an amenable number.

69443945 is a deficient number, since it is larger than the sum of its proper divisors (14355415).

69443945 is a wasteful number, since it uses less digits than its factorization.

69443945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77775.

The product of its digits is 466560, while the sum is 44.

The square root of 69443945 is about 8333.3033666128. The cubic root of 69443945 is about 411.0343603306.

The spelling of 69443945 in words is "sixty-nine million, four hundred forty-three thousand, nine hundred forty-five".