789450005 has 4 divisors (see below), whose sum is σ = 947340012. Its totient is φ = 631560000.

The previous prime is 789449987. The next prime is 789450043. The reversal of 789450005 is 500054987.

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

It can be written as a sum of positive squares in 2 ways, for example, as 589566961 + 199883044 = 24281^2 + 14138^2 .

It is a de Polignac number, because none of the positive numbers 2^k-789450005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78944996 + ... + 78945005.

It is an arithmetic number, because the mean of its divisors is an integer number (236835003).

Almost surely, 2^789450005 is an apocalyptic number.

It is an amenable number.

789450005 is a deficient number, since it is larger than the sum of its proper divisors (157890007).

789450005 is a wasteful number, since it uses less digits than its factorization.

789450005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157890006.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 789450005 is about 28097.1529696516. The cubic root of 789450005 is about 924.2189676921.

The spelling of 789450005 in words is "seven hundred eighty-nine million, four hundred fifty thousand, five".