84400003 has 2 divisors, whose sum is σ = 84400004. Its totient is φ = 84400002.

The previous prime is 84399989. The next prime is 84400021. The reversal of 84400003 is 30000448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84400003 - 2¹⁷ = 84268931 is a prime.

It is not a weakly prime, because it can be changed into another prime (84400093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42200001 + 42200002.

It is an arithmetic number, because the mean of its divisors is an integer number (42200002).

Almost surely, 2^84400003 is an apocalyptic number.

84400003 is a deficient number, since it is larger than the sum of its proper divisors (1).

84400003 is an equidigital number, since it uses as much as digits as its factorization.

84400003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 84400003 is about 9186.9474255598. The cubic root of 84400003 is about 438.6459804328.

The spelling of 84400003 in words is "eighty-four million, four hundred thousand, three".