78443741 has 4 divisors (see below), whose sum is σ = 78913632. Its totient is φ = 77973852.

The previous prime is 78443699. The next prime is 78443749. The reversal of 78443741 is 14734487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78443741 - 2¹⁴ = 78427357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78443695 and 78443704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78443749) 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, 234695 + ... + 235028.

It is an arithmetic number, because the mean of its divisors is an integer number (19728408).

Almost surely, 2^78443741 is an apocalyptic number.

It is an amenable number.

78443741 is a deficient number, since it is larger than the sum of its proper divisors (469891).

78443741 is a wasteful number, since it uses less digits than its factorization.

78443741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469890.

The product of its digits is 75264, while the sum is 38.

The square root of 78443741 is about 8856.8471252472. The cubic root of 78443741 is about 428.0745732143.

The spelling of 78443741 in words is "seventy-eight million, four hundred forty-three thousand, seven hundred forty-one".