84934609 has 2 divisors, whose sum is σ = 84934610. Its totient is φ = 84934608.

The previous prime is 84934543. The next prime is 84934621. The reversal of 84934609 is 90643948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56205009 + 28729600 = 7497^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 84934609 - 2¹³ = 84926417 is a prime.

It is not a weakly prime, because it can be changed into another prime (84932609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42467304 + 42467305.

It is an arithmetic number, because the mean of its divisors is an integer number (42467305).

Almost surely, 2^84934609 is an apocalyptic number.

It is an amenable number.

84934609 is a deficient number, since it is larger than the sum of its proper divisors (1).

84934609 is an equidigital number, since it uses as much as digits as its factorization.

84934609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 84934609 is about 9215.9974500865. The cubic root of 84934609 is about 439.5701880593.

The spelling of 84934609 in words is "eighty-four million, nine hundred thirty-four thousand, six hundred nine".