99391433 has 2 divisors, whose sum is σ = 99391434. Its totient is φ = 99391432.

The previous prime is 99391429. The next prime is 99391463. The reversal of 99391433 is 33419399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54125449 + 45265984 = 7357^2 + 6728^2 .

It is a cyclic number.

It is not a de Polignac number, because 99391433 - 2² = 99391429 is a prime.

It is a super-3 number, since 3×99391433³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (99391423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49695716 + 49695717.

It is an arithmetic number, because the mean of its divisors is an integer number (49695717).

Almost surely, 2^99391433 is an apocalyptic number.

It is an amenable number.

99391433 is a deficient number, since it is larger than the sum of its proper divisors (1).

99391433 is an equidigital number, since it uses as much as digits as its factorization.

99391433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 41.

The square root of 99391433 is about 9969.5252143720. The cubic root of 99391433 is about 463.2153942467.

The spelling of 99391433 in words is "ninety-nine million, three hundred ninety-one thousand, four hundred thirty-three".