78504393 has 8 divisors (see below), whose sum is σ = 114188256. Its totient is φ = 47578400.

The previous prime is 78504373. The next prime is 78504401. The reversal of 78504393 is 39340587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78504393 - 2⁹ = 78503881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78504323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1189428 + ... + 1189493.

It is an arithmetic number, because the mean of its divisors is an integer number (14273532).

Almost surely, 2^78504393 is an apocalyptic number.

It is an amenable number.

78504393 is a deficient number, since it is larger than the sum of its proper divisors (35683863).

78504393 is a wasteful number, since it uses less digits than its factorization.

78504393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378935.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 78504393 is about 8860.2704811986. The cubic root of 78504393 is about 428.1848726040.

The spelling of 78504393 in words is "seventy-eight million, five hundred four thousand, three hundred ninety-three".