69921393 has 8 divisors (see below), whose sum is σ = 93276768. Its totient is φ = 46590144.

The previous prime is 69921343. The next prime is 69921409. The reversal of 69921393 is 39312996.

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 69921393 - 2⁶ = 69921329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69921343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2430 + ... + 12072.

It is an arithmetic number, because the mean of its divisors is an integer number (11659596).

Almost surely, 2^69921393 is an apocalyptic number.

It is an amenable number.

69921393 is a deficient number, since it is larger than the sum of its proper divisors (23355375).

69921393 is a wasteful number, since it uses less digits than its factorization.

69921393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12063.

The product of its digits is 78732, while the sum is 42.

The square root of 69921393 is about 8361.9012790154. The cubic root of 69921393 is about 411.9742046407.

It can be divided in two parts, 6992 and 1393, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 69921393 in words is "sixty-nine million, nine hundred twenty-one thousand, three hundred ninety-three".