84670434 has 28 divisors (see below), whose sum is σ = 190424646. Its totient is φ = 28222992.

The previous prime is 84670433. The next prime is 84670457. The reversal of 84670434 is 43407648.

It can be written as a sum of positive squares in only one way, i.e., 83777409 + 893025 = 9153^2 + 945^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84670433) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 27579 + ... + 30494.

Almost surely, 2^84670434 is an apocalyptic number.

84670434 is an abundant number, since it is smaller than the sum of its proper divisors (105754212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84670434 is an equidigital number, since it uses as much as digits as its factorization.

84670434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58093 (or 58078 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 84670434 is about 9201.6538730817. The cubic root of 84670434 is about 439.1139780466.

The spelling of 84670434 in words is "eighty-four million, six hundred seventy thousand, four hundred thirty-four".