84261797 has 2 divisors, whose sum is σ = 84261798. Its totient is φ = 84261796.

The previous prime is 84261769. The next prime is 84261803. The reversal of 84261797 is 79716248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83192641 + 1069156 = 9121^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 84261797 - 2²⁴ = 67484581 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84261497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42130898 + 42130899.

It is an arithmetic number, because the mean of its divisors is an integer number (42130899).

Almost surely, 2^84261797 is an apocalyptic number.

It is an amenable number.

84261797 is a deficient number, since it is larger than the sum of its proper divisors (1).

84261797 is an equidigital number, since it uses as much as digits as its factorization.

84261797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 84261797 is about 9179.4224763871. The cubic root of 84261797 is about 438.4064203028.

It can be divided in two parts, 84261 and 797, that added together give a palindrome (85058).

The spelling of 84261797 in words is "eighty-four million, two hundred sixty-one thousand, seven hundred ninety-seven".