9911438434 has 8 divisors (see below), whose sum is σ = 15055349760. Its totient is φ = 4892988516.

The previous prime is 9911438423. The next prime is 9911438437. The reversal of 9911438434 is 4348341199.

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

It is a super-2 number, since 2×9911438434² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9911438437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31365154 + ... + 31365469.

It is an arithmetic number, because the mean of its divisors is an integer number (1881918720).

Almost surely, 2^9911438434 is an apocalyptic number.

9911438434 is a deficient number, since it is larger than the sum of its proper divisors (5143911326).

9911438434 is a wasteful number, since it uses less digits than its factorization.

9911438434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62730704.

The product of its digits is 373248, while the sum is 46.

The square root of 9911438434 is about 99556.2074106884. The cubic root of 9911438434 is about 2148.0558183787.

The spelling of 9911438434 in words is "nine billion, nine hundred eleven million, four hundred thirty-eight thousand, four hundred thirty-four".