99407843 has 2 divisors, whose sum is σ = 99407844. Its totient is φ = 99407842.

The previous prime is 99407839. The next prime is 99407887. The reversal of 99407843 is 34870499.

It is an a-pointer prime, because the next prime (99407887) can be obtained adding 99407843 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99407843 - 2² = 99407839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99407794 and 99407803.

It is not a weakly prime, because it can be changed into another prime (99407813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49703921 + 49703922.

It is an arithmetic number, because the mean of its divisors is an integer number (49703922).

Almost surely, 2^99407843 is an apocalyptic number.

99407843 is a deficient number, since it is larger than the sum of its proper divisors (1).

99407843 is an equidigital number, since it uses as much as digits as its factorization.

99407843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 99407843 is about 9970.3481885037. The cubic root of 99407843 is about 463.2408858680.

The spelling of 99407843 in words is "ninety-nine million, four hundred seven thousand, eight hundred forty-three".