99534431 has 2 divisors, whose sum is σ = 99534432. Its totient is φ = 99534430.

The previous prime is 99534419. The next prime is 99534469. The reversal of 99534431 is 13443599.

It is an a-pointer prime, because the next prime (99534469) can be obtained adding 99534431 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99534431 - 2⁶ = 99534367 is a prime.

It is a super-2 number, since 2×99534431² = 19814205908987522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99534401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49767215 + 49767216.

It is an arithmetic number, because the mean of its divisors is an integer number (49767216).

Almost surely, 2^99534431 is an apocalyptic number.

99534431 is a deficient number, since it is larger than the sum of its proper divisors (1).

99534431 is an equidigital number, since it uses as much as digits as its factorization.

99534431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 99534431 is about 9976.6943924328. The cubic root of 99534431 is about 463.4374359645.

The spelling of 99534431 in words is "ninety-nine million, five hundred thirty-four thousand, four hundred thirty-one".