780520449 has 8 divisors (see below), whose sum is σ = 1074264832. Its totient is φ = 503561520.

The previous prime is 780520417. The next prime is 780520457. The reversal of 780520449 is 944025087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 780520449 - 2⁵ = 780520417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780520459) 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, 4196254 + ... + 4196439.

It is an arithmetic number, because the mean of its divisors is an integer number (134283104).

Almost surely, 2^780520449 is an apocalyptic number.

It is an amenable number.

780520449 is a deficient number, since it is larger than the sum of its proper divisors (293744383).

780520449 is a wasteful number, since it uses less digits than its factorization.

780520449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8392727.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 780520449 is about 27937.7960655453. The cubic root of 780520449 is about 920.7210985632.

The spelling of 780520449 in words is "seven hundred eighty million, five hundred twenty thousand, four hundred forty-nine".