84149873 has 2 divisors, whose sum is σ = 84149874. Its totient is φ = 84149872.

The previous prime is 84149843. The next prime is 84149887. The reversal of 84149873 is 37894148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81938704 + 2211169 = 9052^2 + 1487^2 .

It is a cyclic number.

It is not a de Polignac number, because 84149873 - 2⁶ = 84149809 is a prime.

It is a super-2 number, since 2×84149873² = 14162402251832258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84149843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42074936 + 42074937.

It is an arithmetic number, because the mean of its divisors is an integer number (42074937).

Almost surely, 2^84149873 is an apocalyptic number.

It is an amenable number.

84149873 is a deficient number, since it is larger than the sum of its proper divisors (1).

84149873 is an equidigital number, since it uses as much as digits as its factorization.

84149873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 84149873 is about 9173.3239886096. The cubic root of 84149873 is about 438.2122241840.

The spelling of 84149873 in words is "eighty-four million, one hundred forty-nine thousand, eight hundred seventy-three".