84006149 has 2 divisors, whose sum is σ = 84006150. Its totient is φ = 84006148.

The previous prime is 84006103. The next prime is 84006161. The reversal of 84006149 is 94160048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82992100 + 1014049 = 9110^2 + 1007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84006149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84000149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42003074 + 42003075.

It is an arithmetic number, because the mean of its divisors is an integer number (42003075).

Almost surely, 2^84006149 is an apocalyptic number.

It is an amenable number.

84006149 is a deficient number, since it is larger than the sum of its proper divisors (1).

84006149 is an equidigital number, since it uses as much as digits as its factorization.

84006149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 84006149 is about 9165.4868392246. The cubic root of 84006149 is about 437.9626001023.

The spelling of 84006149 in words is "eighty-four million, six thousand, one hundred forty-nine".