78453407 has 8 divisors (see below), whose sum is σ = 79403520. Its totient is φ = 77509080.

The previous prime is 78453383. The next prime is 78453433. The reversal of 78453407 is 70435487.

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 78453407 - 2¹² = 78449311 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 (78453007) 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, 29732 + ... + 32262.

It is an arithmetic number, because the mean of its divisors is an integer number (9925440).

Almost surely, 2^78453407 is an apocalyptic number.

78453407 is a deficient number, since it is larger than the sum of its proper divisors (950113).

78453407 is a wasteful number, since it uses less digits than its factorization.

78453407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 78453407 is about 8857.3927879484. The cubic root of 78453407 is about 428.0921552369.

The spelling of 78453407 in words is "seventy-eight million, four hundred fifty-three thousand, four hundred seven".