78703943 has 4 divisors (see below), whose sum is σ = 79205400. Its totient is φ = 78202488.

The previous prime is 78703939. The next prime is 78703949. The reversal of 78703943 is 34930787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78703943 - 2² = 78703939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78703943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78703949) 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, 250493 + ... + 250806.

It is an arithmetic number, because the mean of its divisors is an integer number (19801350).

Almost surely, 2^78703943 is an apocalyptic number.

78703943 is a deficient number, since it is larger than the sum of its proper divisors (501457).

78703943 is a wasteful number, since it uses less digits than its factorization.

78703943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501456.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 78703943 is about 8871.5242771465. The cubic root of 78703943 is about 428.5473661040.

The spelling of 78703943 in words is "seventy-eight million, seven hundred three thousand, nine hundred forty-three".