69989939 has 8 divisors (see below), whose sum is σ = 75387840. Its totient is φ = 64763496.

The previous prime is 69989923. The next prime is 69990029. The reversal of 69989939 is 93998996.

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

It is a cyclic number.

It is not a de Polignac number, because 69989939 - 2⁴ = 69989923 is a prime.

It is a super-2 number, since 2×69989939² = 9797183122447442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69989539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42017 + ... + 43650.

It is an arithmetic number, because the mean of its divisors is an integer number (9423480).

Almost surely, 2^69989939 is an apocalyptic number.

69989939 is a deficient number, since it is larger than the sum of its proper divisors (5397901).

69989939 is a wasteful number, since it uses less digits than its factorization.

69989939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85729.

The product of its digits is 8503056, while the sum is 62.

The square root of 69989939 is about 8365.9989839827. The cubic root of 69989939 is about 412.1087841532.

The spelling of 69989939 in words is "sixty-nine million, nine hundred eighty-nine thousand, nine hundred thirty-nine".