78004453 has 4 divisors (see below), whose sum is σ = 78240448. Its totient is φ = 77768460.

The previous prime is 78004447. The next prime is 78004469. The reversal of 78004453 is 35440087.

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 78004453 - 2²¹ = 75907301 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 (78004853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117501 + ... + 118162.

It is an arithmetic number, because the mean of its divisors is an integer number (19560112).

Almost surely, 2^78004453 is an apocalyptic number.

It is an amenable number.

78004453 is a deficient number, since it is larger than the sum of its proper divisors (235995).

78004453 is a wasteful number, since it uses less digits than its factorization.

78004453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235994.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 78004453 is about 8832.0129642115. The cubic root of 78004453 is about 427.2739988480.

The spelling of 78004453 in words is "seventy-eight million, four thousand, four hundred fifty-three".