84090577 has 2 divisors, whose sum is σ = 84090578. Its totient is φ = 84090576.

The previous prime is 84090571. The next prime is 84090659. The reversal of 84090577 is 77509048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49056016 + 35034561 = 7004^2 + 5919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84090577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84090571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42045288 + 42045289.

It is an arithmetic number, because the mean of its divisors is an integer number (42045289).

Almost surely, 2^84090577 is an apocalyptic number.

It is an amenable number.

84090577 is a deficient number, since it is larger than the sum of its proper divisors (1).

84090577 is an equidigital number, since it uses as much as digits as its factorization.

84090577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 84090577 is about 9170.0914390207. The cubic root of 84090577 is about 438.1092716116.

The spelling of 84090577 in words is "eighty-four million, ninety thousand, five hundred seventy-seven".