945395993 has 4 divisors (see below), whose sum is σ = 1001007540. Its totient is φ = 889784448.

The previous prime is 945395987. The next prime is 945396007. The reversal of 945395993 is 399593549.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 607277449 + 338118544 = 24643^2 + 18388^2 .

It is a cyclic number.

It is not a de Polignac number, because 945395993 - 2¹⁴ = 945379609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945395593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27805748 + ... + 27805781.

It is an arithmetic number, because the mean of its divisors is an integer number (250251885).

Almost surely, 2^945395993 is an apocalyptic number.

It is an amenable number.

945395993 is a deficient number, since it is larger than the sum of its proper divisors (55611547).

945395993 is a wasteful number, since it uses less digits than its factorization.

945395993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55611546.

The product of its digits is 5904900, while the sum is 56.

The square root of 945395993 is about 30747.2924499052. The cubic root of 945395993 is about 981.4569447469.

The spelling of 945395993 in words is "nine hundred forty-five million, three hundred ninety-five thousand, nine hundred ninety-three".