78352793 has 4 divisors (see below), whose sum is σ = 78521040. Its totient is φ = 78184548.

The previous prime is 78352787. The next prime is 78352811. The reversal of 78352793 is 39725387.

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 78352793 - 2⁸ = 78352537 is a prime.

It is a super-2 number, since 2×78352793² = 12278320341801698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78352733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83423 + ... + 84356.

It is an arithmetic number, because the mean of its divisors is an integer number (19630260).

Almost surely, 2^78352793 is an apocalyptic number.

It is an amenable number.

78352793 is a deficient number, since it is larger than the sum of its proper divisors (168247).

78352793 is a wasteful number, since it uses less digits than its factorization.

78352793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168246.

The product of its digits is 317520, while the sum is 44.

The square root of 78352793 is about 8851.7113034712. The cubic root of 78352793 is about 427.9090720892.

The spelling of 78352793 in words is "seventy-eight million, three hundred fifty-two thousand, seven hundred ninety-three".