780247953 has 12 divisors (see below), whose sum is σ = 1127301760. Its totient is φ = 520037496.

The previous prime is 780247931. The next prime is 780247967. The reversal of 780247953 is 359742087.

It is not a de Polignac number, because 780247953 - 2⁹ = 780247441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 780247899 and 780247908.

It is not an unprimeable number, because it can be changed into a prime (780247903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41400 + ... + 57222.

Almost surely, 2^780247953 is an apocalyptic number.

It is an amenable number.

780247953 is a deficient number, since it is larger than the sum of its proper divisors (347053807).

780247953 is a wasteful number, since it uses less digits than its factorization.

780247953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21308 (or 21305 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 780247953 is about 27932.9188055957. The cubic root of 780247953 is about 920.6139384327.

It can be divided in two parts, 7802 and 47953, that added together give a palindrome (55755).

The spelling of 780247953 in words is "seven hundred eighty million, two hundred forty-seven thousand, nine hundred fifty-three".