944539993 has 8 divisors (see below), whose sum is σ = 958184136. Its totient is φ = 930988800.

The previous prime is 944539987. The next prime is 944539997. The reversal of 944539993 is 399935449.

It can be written as a sum of positive squares in 4 ways, for example, as 12581209 + 931958784 = 3547^2 + 30528^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 944539993 - 2²⁹ = 407669081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (944539997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2638 + ... + 43543.

It is an arithmetic number, because the mean of its divisors is an integer number (119773017).

Almost surely, 2^944539993 is an apocalyptic number.

It is an amenable number.

944539993 is a deficient number, since it is larger than the sum of its proper divisors (13644143).

944539993 is a wasteful number, since it uses less digits than its factorization.

944539993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46475.

The product of its digits is 4723920, while the sum is 55.

The square root of 944539993 is about 30733.3693727193. The cubic root of 944539993 is about 981.1606382819.

The spelling of 944539993 in words is "nine hundred forty-four million, five hundred thirty-nine thousand, nine hundred ninety-three".