947492389 has 2 divisors, whose sum is σ = 947492390. Its totient is φ = 947492388.

The previous prime is 947492353. The next prime is 947492423. The reversal of 947492389 is 983294749.

947492389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 924768100 + 22724289 = 30410^2 + 4767^2 .

It is a cyclic number.

It is not a de Polignac number, because 947492389 - 2⁷ = 947492261 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947492789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473746194 + 473746195.

It is an arithmetic number, because the mean of its divisors is an integer number (473746195).

Almost surely, 2^947492389 is an apocalyptic number.

It is an amenable number.

947492389 is a deficient number, since it is larger than the sum of its proper divisors (1).

947492389 is an equidigital number, since it uses as much as digits as its factorization.

947492389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 55.

The square root of 947492389 is about 30781.3643134933. The cubic root of 947492389 is about 982.1818626512.

The spelling of 947492389 in words is "nine hundred forty-seven million, four hundred ninety-two thousand, three hundred eighty-nine".