78873958 has 8 divisors (see below), whose sum is σ = 118441080. Its totient is φ = 39393600.

The previous prime is 78873953. The next prime is 78873979. The reversal of 78873958 is 85937887.

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

It is a super-2 number, since 2×78873958² = 12442202501171528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78873899 and 78873908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78873953) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 19368 + ... + 23083.

It is an arithmetic number, because the mean of its divisors is an integer number (14805135).

Almost surely, 2^78873958 is an apocalyptic number.

78873958 is a deficient number, since it is larger than the sum of its proper divisors (39567122).

78873958 is a wasteful number, since it uses less digits than its factorization.

78873958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43382.

The product of its digits is 3386880, while the sum is 55.

The square root of 78873958 is about 8881.1011704630. The cubic root of 78873958 is about 428.8557245642.

The spelling of 78873958 in words is "seventy-eight million, eight hundred seventy-three thousand, nine hundred fifty-eight".