9439393905 has 48 divisors (see below), whose sum is σ = 17353187280. Its totient is φ = 4730241024.

The previous prime is 9439393853. The next prime is 9439393937. The reversal of 9439393905 is 5093939349.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 31169889 + 9408224016 = 5583^2 + 96996^2 .

It is not a de Polignac number, because 9439393905 - 2¹³ = 9439385713 is a prime.

It is a super-2 number, since 2×9439393905² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 458881 + ... + 479009.

It is an arithmetic number, because the mean of its divisors is an integer number (361524735).

Almost surely, 2^9439393905 is an apocalyptic number.

It is an amenable number.

9439393905 is a deficient number, since it is larger than the sum of its proper divisors (7913793375).

9439393905 is a wasteful number, since it uses less digits than its factorization.

9439393905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20770 (or 20767 counting only the distinct ones).

The product of its (nonzero) digits is 3542940, while the sum is 54.

The square root of 9439393905 is about 97156.5432948291. The cubic root of 9439393905 is about 2113.3983783486.

The spelling of 9439393905 in words is "nine billion, four hundred thirty-nine million, three hundred ninety-three thousand, nine hundred five".