78953339 has 4 divisors (see below), whose sum is σ = 79210824. Its totient is φ = 78695856.

The previous prime is 78953333. The next prime is 78953351. The reversal of 78953339 is 93335987.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78953339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78953293 and 78953302.

It is not an unprimeable number, because it can be changed into a prime (78953333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128282 + ... + 128895.

It is an arithmetic number, because the mean of its divisors is an integer number (19802706).

Almost surely, 2^78953339 is an apocalyptic number.

78953339 is a deficient number, since it is larger than the sum of its proper divisors (257485).

78953339 is a wasteful number, since it uses less digits than its factorization.

78953339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257484.

The product of its digits is 612360, while the sum is 47.

The square root of 78953339 is about 8885.5691432795. The cubic root of 78953339 is about 428.9995472019. Note that the first 3 decimals are identical.

The spelling of 78953339 in words is "seventy-eight million, nine hundred fifty-three thousand, three hundred thirty-nine".