9995926438 has 32 divisors (see below), whose sum is σ = 15799497120. Its totient is φ = 4737922560.

The previous prime is 9995926337. The next prime is 9995926483. The reversal of 9995926438 is 8346295999.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9995926438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483228 + ... + 503488.

It is an arithmetic number, because the mean of its divisors is an integer number (493734285).

Almost surely, 2^9995926438 is an apocalyptic number.

9995926438 is a deficient number, since it is larger than the sum of its proper divisors (5803570682).

9995926438 is a wasteful number, since it uses less digits than its factorization.

9995926438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20472.

The product of its digits is 37791360, while the sum is 64.

The square root of 9995926438 is about 99979.6301153390. The cubic root of 9995926438 is about 2154.1421095240.

The spelling of 9995926438 in words is "nine billion, nine hundred ninety-five million, nine hundred twenty-six thousand, four hundred thirty-eight".