9994923438 has 64 divisors (see below), whose sum is σ = 21611923200. Its totient is φ = 3071865600.

The previous prime is 9994923437. The next prime is 9994923439. The reversal of 9994923438 is 8343294999.

It is an interprime number because it is at equal distance from previous prime (9994923437) and next prime (9994923439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994923431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671970 + ... + 686682.

It is an arithmetic number, because the mean of its divisors is an integer number (337686300).

Almost surely, 2^9994923438 is an apocalyptic number.

9994923438 is an abundant number, since it is smaller than the sum of its proper divisors (11616999762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9994923438 is a wasteful number, since it uses less digits than its factorization.

9994923438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14897.

The product of its digits is 15116544, while the sum is 60.

The square root of 9994923438 is about 99974.6139677468. The cubic root of 9994923438 is about 2154.0700576130.

The spelling of 9994923438 in words is "nine billion, nine hundred ninety-four million, nine hundred twenty-three thousand, four hundred thirty-eight".