84433813 has 2 divisors, whose sum is σ = 84433814. Its totient is φ = 84433812.

The previous prime is 84433799. The next prime is 84433829. The reversal of 84433813 is 31833448.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62362609 + 22071204 = 7897^2 + 4698^2 .

It is a cyclic number.

It is not a de Polignac number, because 84433813 - 2⁹ = 84433301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84433873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42216906 + 42216907.

It is an arithmetic number, because the mean of its divisors is an integer number (42216907).

Almost surely, 2^84433813 is an apocalyptic number.

It is an amenable number.

84433813 is a deficient number, since it is larger than the sum of its proper divisors (1).

84433813 is an equidigital number, since it uses as much as digits as its factorization.

84433813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 34.

The square root of 84433813 is about 9188.7873519850. The cubic root of 84433813 is about 438.7045453623.

The spelling of 84433813 in words is "eighty-four million, four hundred thirty-three thousand, eight hundred thirteen".