78462979 has 8 divisors (see below), whose sum is σ = 91192320. Its totient is φ = 66113736.

The previous prime is 78462947. The next prime is 78463001. The reversal of 78462979 is 97926487.

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

It is a cyclic number.

It is not a de Polignac number, because 78462979 - 2⁵ = 78462947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78462179) 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, 94579 + ... + 95404.

It is an arithmetic number, because the mean of its divisors is an integer number (11399040).

Almost surely, 2^78462979 is an apocalyptic number.

78462979 is a deficient number, since it is larger than the sum of its proper divisors (12729341).

78462979 is a wasteful number, since it uses less digits than its factorization.

78462979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190049.

The product of its digits is 1524096, while the sum is 52.

The square root of 78462979 is about 8857.9331110593. The cubic root of 78462979 is about 428.1095648546.

The spelling of 78462979 in words is "seventy-eight million, four hundred sixty-two thousand, nine hundred seventy-nine".