9917438100 has 36 divisors (see below), whose sum is σ = 28694455104. Its totient is φ = 2644650080.

The previous prime is 9917438081. The next prime is 9917438101. The reversal of 9917438100 is 18347199.

It is a happy number.

It is a super-2 number, since 2×9917438100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917438101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16528764 + ... + 16529363.

Almost surely, 2^9917438100 is an apocalyptic number.

It is an amenable number.

9917438100 is an abundant number, since it is smaller than the sum of its proper divisors (18777017004).

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

9917438100 is a wasteful number, since it uses less digits than its factorization.

9917438100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33058144 (or 33058137 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 9917438100 is about 99586.3349059498. The cubic root of 9917438100 is about 2148.4891566881.

The spelling of 9917438100 in words is "nine billion, nine hundred seventeen million, four hundred thirty-eight thousand, one hundred".