84364531 has 2 divisors, whose sum is σ = 84364532. Its totient is φ = 84364530.

The previous prime is 84364517. The next prime is 84364537. The reversal of 84364531 is 13546348.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84364531 is a prime.

It is a super-2 number, since 2×84364531² = 14234748181699922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84364537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42182265 + 42182266.

It is an arithmetic number, because the mean of its divisors is an integer number (42182266).

Almost surely, 2^84364531 is an apocalyptic number.

84364531 is a deficient number, since it is larger than the sum of its proper divisors (1).

84364531 is an equidigital number, since it uses as much as digits as its factorization.

84364531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 84364531 is about 9185.0166575788. The cubic root of 84364531 is about 438.5845198088.

The spelling of 84364531 in words is "eighty-four million, three hundred sixty-four thousand, five hundred thirty-one".