69968939 has 4 divisors (see below), whose sum is σ = 69994680. Its totient is φ = 69943200.

The previous prime is 69968933. The next prime is 69969019. The reversal of 69968939 is 93986996.

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 69968939 - 2⁸ = 69968683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69968933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8237 + ... + 14414.

It is an arithmetic number, because the mean of its divisors is an integer number (17498670).

Almost surely, 2^69968939 is an apocalyptic number.

69968939 is a deficient number, since it is larger than the sum of its proper divisors (25741).

69968939 is a wasteful number, since it uses less digits than its factorization.

69968939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25740.

The product of its digits is 5668704, while the sum is 59.

The square root of 69968939 is about 8364.7438095856. The cubic root of 69968939 is about 412.0675632278.

It can be divided in two parts, 69968 and 939, that added together give a palindrome (70907).

The spelling of 69968939 in words is "sixty-nine million, nine hundred sixty-eight thousand, nine hundred thirty-nine".