78075479 has 4 divisors (see below), whose sum is σ = 78100584. Its totient is φ = 78050376.

The previous prime is 78075449. The next prime is 78075493. The reversal of 78075479 is 97457087.

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

It is a cyclic number.

It is not a de Polignac number, because 78075479 - 2⁸ = 78075223 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 (78075449) 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, 7097 + ... + 14370.

It is an arithmetic number, because the mean of its divisors is an integer number (19525146).

Almost surely, 2^78075479 is an apocalyptic number.

78075479 is a deficient number, since it is larger than the sum of its proper divisors (25105).

78075479 is a wasteful number, since it uses less digits than its factorization.

78075479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25104.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 78075479 is about 8836.0329899792. The cubic root of 78075479 is about 427.4036425443.

The spelling of 78075479 in words is "seventy-eight million, seventy-five thousand, four hundred seventy-nine".