9239939090 has 8 divisors (see below), whose sum is σ = 16631890380. Its totient is φ = 3695975632.

The previous prime is 9239939057. The next prime is 9239939101. The reversal of 9239939090 is 909399329.

It can be written as a sum of positive squares in 2 ways, for example, as 8998229881 + 241709209 = 94859^2 + 15547^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461996945 + ... + 461996964.

Almost surely, 2^9239939090 is an apocalyptic number.

9239939090 is a deficient number, since it is larger than the sum of its proper divisors (7391951290).

9239939090 is a wasteful number, since it uses less digits than its factorization.

9239939090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923993916.

The product of its (nonzero) digits is 1062882, while the sum is 53.

The square root of 9239939090 is about 96124.6018977452. The cubic root of 9239939090 is about 2098.4068862109.

The spelling of 9239939090 in words is "nine billion, two hundred thirty-nine million, nine hundred thirty-nine thousand, ninety".