945747389 has 2 divisors, whose sum is σ = 945747390. Its totient is φ = 945747388.

The previous prime is 945747379. The next prime is 945747409. The reversal of 945747389 is 983747549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895804900 + 49942489 = 29930^2 + 7067^2 .

It is a cyclic number.

It is not a de Polignac number, because 945747389 - 2²⁸ = 677311933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945747359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472873694 + 472873695.

It is an arithmetic number, because the mean of its divisors is an integer number (472873695).

Almost surely, 2^945747389 is an apocalyptic number.

It is an amenable number.

945747389 is a deficient number, since it is larger than the sum of its proper divisors (1).

945747389 is an equidigital number, since it uses as much as digits as its factorization.

945747389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 945747389 is about 30753.0061782584. The cubic root of 945747389 is about 981.5785295382.

The spelling of 945747389 in words is "nine hundred forty-five million, seven hundred forty-seven thousand, three hundred eighty-nine".