78938455 has 8 divisors (see below), whose sum is σ = 95308272. Its totient is φ = 62762688.

The previous prime is 78938449. The next prime is 78938467. The reversal of 78938455 is 55483987.

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 78938455 - 2⁵ = 78938423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78938399 and 78938408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47614 + ... + 49243.

It is an arithmetic number, because the mean of its divisors is an integer number (11913534).

Almost surely, 2^78938455 is an apocalyptic number.

78938455 is a deficient number, since it is larger than the sum of its proper divisors (16369817).

78938455 is a wasteful number, since it uses less digits than its factorization.

78938455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97025.

The product of its digits is 1209600, while the sum is 49.

The square root of 78938455 is about 8884.7315660069. The cubic root of 78938455 is about 428.9725876896.

The spelling of 78938455 in words is "seventy-eight million, nine hundred thirty-eight thousand, four hundred fifty-five".