78089743 has 4 divisors (see below), whose sum is σ = 78132600. Its totient is φ = 78046888.

The previous prime is 78089689. The next prime is 78089747. The reversal of 78089743 is 34798087.

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 78089743 - 2¹³ = 78081551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78089693 and 78089702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78089747) 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, 18568 + ... + 22381.

It is an arithmetic number, because the mean of its divisors is an integer number (19533150).

Almost surely, 2^78089743 is an apocalyptic number.

78089743 is a deficient number, since it is larger than the sum of its proper divisors (42857).

78089743 is a wasteful number, since it uses less digits than its factorization.

78089743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42856.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 78089743 is about 8836.8401026611. The cubic root of 78089743 is about 427.4296691295.

The spelling of 78089743 in words is "seventy-eight million, eighty-nine thousand, seven hundred forty-three".