78841923 has 8 divisors (see below), whose sum is σ = 108747600. Its totient is φ = 50748768.

The previous prime is 78841909. The next prime is 78841927. The reversal of 78841923 is 32914887.

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

It is not a de Polignac number, because 78841923 - 2⁸ = 78841667 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (78841927) 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, 453028 + ... + 453201.

It is an arithmetic number, because the mean of its divisors is an integer number (13593450).

Almost surely, 2^78841923 is an apocalyptic number.

78841923 is a deficient number, since it is larger than the sum of its proper divisors (29905677).

78841923 is a wasteful number, since it uses less digits than its factorization.

78841923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906261.

The product of its digits is 96768, while the sum is 42.

The square root of 78841923 is about 8879.2974384238. The cubic root of 78841923 is about 428.7976561647.

The spelling of 78841923 in words is "seventy-eight million, eight hundred forty-one thousand, nine hundred twenty-three".