78829371 has 6 divisors (see below), whose sum is σ = 113864660. Its totient is φ = 52552908.

The previous prime is 78829343. The next prime is 78829379. The reversal of 78829371 is 17392887.

It is not a de Polignac number, because 78829371 - 2⁶ = 78829307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78829379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4379401 + ... + 4379418.

Almost surely, 2^78829371 is an apocalyptic number.

78829371 is a deficient number, since it is larger than the sum of its proper divisors (35035289).

78829371 is a wasteful number, since it uses less digits than its factorization.

78829371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8758825 (or 8758822 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 78829371 is about 8878.5905976118. The cubic root of 78829371 is about 428.7748994314.

The spelling of 78829371 in words is "seventy-eight million, eight hundred twenty-nine thousand, three hundred seventy-one".