78992014 has 4 divisors (see below), whose sum is σ = 118488024. Its totient is φ = 39496006.

The previous prime is 78992009. The next prime is 78992033. The reversal of 78992014 is 41029987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41029987 = 19 ⋅2159473.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19748002 + ... + 19748005.

It is an arithmetic number, because the mean of its divisors is an integer number (29622006).

Almost surely, 2^78992014 is an apocalyptic number.

78992014 is a deficient number, since it is larger than the sum of its proper divisors (39496010).

78992014 is a wasteful number, since it uses less digits than its factorization.

78992014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39496009.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 78992014 is about 8887.7451583627. The cubic root of 78992014 is about 429.0695837126.

The spelling of 78992014 in words is "seventy-eight million, nine hundred ninety-two thousand, fourteen".