78863829 has 8 divisors (see below), whose sum is σ = 114711072. Its totient is φ = 47796240.

The previous prime is 78863819. The next prime is 78863831. The reversal of 78863829 is 92836887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78863829 - 2⁵ = 78863797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78863809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194874 + ... + 1194939.

It is an arithmetic number, because the mean of its divisors is an integer number (14338884).

Almost surely, 2^78863829 is an apocalyptic number.

It is an amenable number.

78863829 is a deficient number, since it is larger than the sum of its proper divisors (35847243).

78863829 is a wasteful number, since it uses less digits than its factorization.

78863829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389827.

The product of its digits is 1161216, while the sum is 51.

The square root of 78863829 is about 8880.5308962922. The cubic root of 78863829 is about 428.8373658829.

The spelling of 78863829 in words is "seventy-eight million, eight hundred sixty-three thousand, eight hundred twenty-nine".