780140441 has 2 divisors, whose sum is σ = 780140442. Its totient is φ = 780140440.

The previous prime is 780140411. The next prime is 780140479. The reversal of 780140441 is 144041087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 494395225 + 285745216 = 22235^2 + 16904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-780140441 is a prime.

It is not a weakly prime, because it can be changed into another prime (780140411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390070220 + 390070221.

It is an arithmetic number, because the mean of its divisors is an integer number (390070221).

Almost surely, 2^780140441 is an apocalyptic number.

It is an amenable number.

780140441 is a deficient number, since it is larger than the sum of its proper divisors (1).

780140441 is an equidigital number, since it uses as much as digits as its factorization.

780140441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 780140441 is about 27930.9942715973. The cubic root of 780140441 is about 920.5716520493.

The spelling of 780140441 in words is "seven hundred eighty million, one hundred forty thousand, four hundred forty-one".