84934521 has 32 divisors (see below), whose sum is σ = 145233920. Its totient is φ = 48051792.

The previous prime is 84934501. The next prime is 84934543. The reversal of 84934521 is 12543948.

84934521 = T₇₈ + T₇₉ + ... + T₇₉₈.

It is not a de Polignac number, because 84934521 - 2⁵ = 84934489 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84934501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17286 + ... + 21648.

It is an arithmetic number, because the mean of its divisors is an integer number (4538560).

Almost surely, 2^84934521 is an apocalyptic number.

It is an amenable number.

84934521 is a deficient number, since it is larger than the sum of its proper divisors (60299399).

84934521 is a wasteful number, since it uses less digits than its factorization.

84934521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482 (or 4476 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 84934521 is about 9215.9926757783. The cubic root of 84934521 is about 439.5700362476.

The spelling of 84934521 in words is "eighty-four million, nine hundred thirty-four thousand, five hundred twenty-one".