78986093 has 4 divisors (see below), whose sum is σ = 79013628. Its totient is φ = 78958560.

The previous prime is 78986069. The next prime is 78986113. The reversal of 78986093 is 39068987.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77492809 + 1493284 = 8803^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 78986093 - 2¹⁸ = 78723949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78986893) 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, 8888 + ... + 15393.

It is an arithmetic number, because the mean of its divisors is an integer number (19753407).

Almost surely, 2^78986093 is an apocalyptic number.

It is an amenable number.

78986093 is a deficient number, since it is larger than the sum of its proper divisors (27535).

78986093 is a wasteful number, since it uses less digits than its factorization.

78986093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27534.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 78986093 is about 8887.4120530107. The cubic root of 78986093 is about 429.0588628631.

The spelling of 78986093 in words is "seventy-eight million, nine hundred eighty-six thousand, ninety-three".