78946986 has 8 divisors (see below), whose sum is σ = 157893984. Its totient is φ = 26315660.

The previous prime is 78946949. The next prime is 78946999. The reversal of 78946986 is 68964987.

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

78946986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578910 + ... + 6578921.

It is an arithmetic number, because the mean of its divisors is an integer number (19736748).

Almost surely, 2^78946986 is an apocalyptic number.

78946986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78946986 is a wasteful number, since it uses less digits than its factorization.

78946986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13157836.

The product of its digits is 5225472, while the sum is 57.

The square root of 78946986 is about 8885.2116463256. The cubic root of 78946986 is about 428.9880403749.

The spelling of 78946986 in words is "seventy-eight million, nine hundred forty-six thousand, nine hundred eighty-six".