78913797 has 8 divisors (see below), whose sum is σ = 105284544. Its totient is φ = 52576128.

The previous prime is 78913787. The next prime is 78913801. The reversal of 78913797 is 79731987.

It is a happy number.

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

It is not a de Polignac number, because 78913797 - 2⁶ = 78913733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78913787) 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, 2028 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (13160568).

Almost surely, 2^78913797 is an apocalyptic number.

It is an amenable number.

78913797 is a deficient number, since it is larger than the sum of its proper divisors (26370747).

78913797 is a wasteful number, since it uses less digits than its factorization.

78913797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16539.

The product of its digits is 666792, while the sum is 51.

The square root of 78913797 is about 8883.3437961164. The cubic root of 78913797 is about 428.9279169916.

The spelling of 78913797 in words is "seventy-eight million, nine hundred thirteen thousand, seven hundred ninety-seven".