780134439 has 24 divisors (see below), whose sum is σ = 1227063168. Its totient is φ = 439506480.

The previous prime is 780134419. The next prime is 780134441. The reversal of 780134439 is 934431087.

It is not a de Polignac number, because 780134439 - 2²⁴ = 763357223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780134397 and 780134406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780134419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26937 + ... + 47810.

It is an arithmetic number, because the mean of its divisors is an integer number (51127632).

Almost surely, 2^780134439 is an apocalyptic number.

780134439 is a deficient number, since it is larger than the sum of its proper divisors (446928729).

780134439 is a wasteful number, since it uses less digits than its factorization.

780134439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74835 (or 74828 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 780134439 is about 27930.8868280261. The cubic root of 780134439 is about 920.5692912414.

The spelling of 780134439 in words is "seven hundred eighty million, one hundred thirty-four thousand, four hundred thirty-nine".