69979393 has 4 divisors (see below), whose sum is σ = 76341168. Its totient is φ = 63617620.

The previous prime is 69979387. The next prime is 69979421. The reversal of 69979393 is 39397996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 69979393 - 2¹⁷ = 69848321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69979313) 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, 3180871 + ... + 3180892.

It is an arithmetic number, because the mean of its divisors is an integer number (19085292).

Almost surely, 2^69979393 is an apocalyptic number.

It is an amenable number.

69979393 is a deficient number, since it is larger than the sum of its proper divisors (6361775).

69979393 is a wasteful number, since it uses less digits than its factorization.

69979393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6361774.

The product of its digits is 2480058, while the sum is 55.

The square root of 69979393 is about 8365.3686708955. The cubic root of 69979393 is about 412.0880844278.

The spelling of 69979393 in words is "sixty-nine million, nine hundred seventy-nine thousand, three hundred ninety-three".