78854039 has 8 divisors (see below), whose sum is σ = 86138640. Its totient is φ = 71588800.

The previous prime is 78854011. The next prime is 78854071. The reversal of 78854039 is 93045887.

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 78854039 - 2²⁴ = 62076823 is a prime.

It is a super-2 number, since 2×78854039² = 12435918933227042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78854239) 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, 4469 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (10767330).

Almost surely, 2^78854039 is an apocalyptic number.

78854039 is a deficient number, since it is larger than the sum of its proper divisors (7284601).

78854039 is a wasteful number, since it uses less digits than its factorization.

78854039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 78854039 is about 8879.9796734002. The cubic root of 78854039 is about 428.8196201406.

The spelling of 78854039 in words is "seventy-eight million, eight hundred fifty-four thousand, thirty-nine".