84279653 has 2 divisors, whose sum is σ = 84279654. Its totient is φ = 84279652.

The previous prime is 84279631. The next prime is 84279667. The reversal of 84279653 is 35697248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56580484 + 27699169 = 7522^2 + 5263^2 .

It is a cyclic number.

It is not a de Polignac number, because 84279653 - 2⁶ = 84279589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84279623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42139826 + 42139827.

It is an arithmetic number, because the mean of its divisors is an integer number (42139827).

Almost surely, 2^84279653 is an apocalyptic number.

It is an amenable number.

84279653 is a deficient number, since it is larger than the sum of its proper divisors (1).

84279653 is an equidigital number, since it uses as much as digits as its factorization.

84279653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 84279653 is about 9180.3950350734. The cubic root of 84279653 is about 438.4373858270.

The spelling of 84279653 in words is "eighty-four million, two hundred seventy-nine thousand, six hundred fifty-three".