78986486 has 8 divisors (see below), whose sum is σ = 120488040. Its totient is φ = 38823808.

The previous prime is 78986449. The next prime is 78986497. The reversal of 78986486 is 68468987.

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

It is a congruent 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, 334571 + ... + 334806.

It is an arithmetic number, because the mean of its divisors is an integer number (15061005).

Almost surely, 2^78986486 is an apocalyptic number.

78986486 is a deficient number, since it is larger than the sum of its proper divisors (41501554).

78986486 is a wasteful number, since it uses less digits than its factorization.

78986486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669438.

The product of its digits is 4644864, while the sum is 56.

The square root of 78986486 is about 8887.4341629066. The cubic root of 78986486 is about 429.0595744645.

The spelling of 78986486 in words is "seventy-eight million, nine hundred eighty-six thousand, four hundred eighty-six".