78945935 has 4 divisors (see below), whose sum is σ = 94735128. Its totient is φ = 63156744.

The previous prime is 78945929. The next prime is 78945949. The reversal of 78945935 is 53954987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53954987 = 23 ⋅2345869.

It is a cyclic number.

It is not a de Polignac number, because 78945935 - 2²² = 74751631 is a prime.

It is a Duffinian number.

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, 7894589 + ... + 7894598.

It is an arithmetic number, because the mean of its divisors is an integer number (23683782).

Almost surely, 2^78945935 is an apocalyptic number.

78945935 is a deficient number, since it is larger than the sum of its proper divisors (15789193).

78945935 is a wasteful number, since it uses less digits than its factorization.

78945935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15789192.

The product of its digits is 1360800, while the sum is 50.

The square root of 78945935 is about 8885.1525029118. The cubic root of 78945935 is about 428.9861366990.

The spelling of 78945935 in words is "seventy-eight million, nine hundred forty-five thousand, nine hundred thirty-five".