945389197 has 2 divisors, whose sum is σ = 945389198. Its totient is φ = 945389196.

The previous prime is 945389167. The next prime is 945389219. The reversal of 945389197 is 791983549.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669463876 + 275925321 = 25874^2 + 16611^2 .

It is a cyclic number.

It is not a de Polignac number, because 945389197 - 2¹⁵ = 945356429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945389147) 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, 472694598 + 472694599.

It is an arithmetic number, because the mean of its divisors is an integer number (472694599).

Almost surely, 2^945389197 is an apocalyptic number.

It is an amenable number.

945389197 is a deficient number, since it is larger than the sum of its proper divisors (1).

945389197 is an equidigital number, since it uses as much as digits as its factorization.

945389197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 55.

The square root of 945389197 is about 30747.1819359108. The cubic root of 945389197 is about 981.4545929996.

The spelling of 945389197 in words is "nine hundred forty-five million, three hundred eighty-nine thousand, one hundred ninety-seven".