84579049 has 2 divisors, whose sum is σ = 84579050. Its totient is φ = 84579048.

The previous prime is 84579017. The next prime is 84579083. The reversal of 84579049 is 94097548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44129449 + 40449600 = 6643^2 + 6360^2 .

It is a cyclic number.

It is not a de Polignac number, because 84579049 - 2⁵ = 84579017 is a prime.

It is not a weakly prime, because it can be changed into another prime (84579449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42289524 + 42289525.

It is an arithmetic number, because the mean of its divisors is an integer number (42289525).

Almost surely, 2^84579049 is an apocalyptic number.

It is an amenable number.

84579049 is a deficient number, since it is larger than the sum of its proper divisors (1).

84579049 is an equidigital number, since it uses as much as digits as its factorization.

84579049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 84579049 is about 9196.6868490778. The cubic root of 84579049 is about 438.9559422579.

The spelling of 84579049 in words is "eighty-four million, five hundred seventy-nine thousand, forty-nine".