78913043 has 4 divisors (see below), whose sum is σ = 86086968. Its totient is φ = 71739120.

The previous prime is 78913001. The next prime is 78913049. The reversal of 78913043 is 34031987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34031987 = 11 ⋅3093817.

It is a cyclic number.

It is not a de Polignac number, because 78913043 - 2¹⁶ = 78847507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78912994 and 78913012.

It is not an unprimeable number, because it can be changed into a prime (78913049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3586946 + ... + 3586967.

It is an arithmetic number, because the mean of its divisors is an integer number (21521742).

Almost surely, 2^78913043 is an apocalyptic number.

78913043 is a deficient number, since it is larger than the sum of its proper divisors (7173925).

78913043 is a wasteful number, since it uses less digits than its factorization.

78913043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7173924.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 78913043 is about 8883.3013570406. The cubic root of 78913043 is about 428.9265508905.

The spelling of 78913043 in words is "seventy-eight million, nine hundred thirteen thousand, forty-three".