78709883 has 4 divisors (see below), whose sum is σ = 89954160. Its totient is φ = 67465608.

The previous prime is 78709879. The next prime is 78709889. The reversal of 78709883 is 38890787.

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

It is not a de Polignac number, because 78709883 - 2² = 78709879 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78709889) 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, 5622128 + ... + 5622141.

It is an arithmetic number, because the mean of its divisors is an integer number (22488540).

Almost surely, 2^78709883 is an apocalyptic number.

78709883 is a deficient number, since it is larger than the sum of its proper divisors (11244277).

78709883 is a wasteful number, since it uses less digits than its factorization.

78709883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244276.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 78709883 is about 8871.8590498272. The cubic root of 78709883 is about 428.5581470434.

The spelling of 78709883 in words is "seventy-eight million, seven hundred nine thousand, eight hundred eighty-three".