914780989 has 2 divisors, whose sum is σ = 914780990. Its totient is φ = 914780988.

The previous prime is 914780983. The next prime is 914781061. The reversal of 914780989 is 989087419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 894907225 + 19873764 = 29915^2 + 4458^2 .

It is a cyclic number.

It is not a de Polignac number, because 914780989 - 2⁵ = 914780957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (914780983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457390494 + 457390495.

It is an arithmetic number, because the mean of its divisors is an integer number (457390495).

Almost surely, 2^914780989 is an apocalyptic number.

It is an amenable number.

914780989 is a deficient number, since it is larger than the sum of its proper divisors (1).

914780989 is an equidigital number, since it uses as much as digits as its factorization.

914780989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 914780989 is about 30245.3465676953. The cubic root of 914780989 is about 970.7462245891.

The spelling of 914780989 in words is "nine hundred fourteen million, seven hundred eighty thousand, nine hundred eighty-nine".