84450906 has 12 divisors (see below), whose sum is σ = 182977002. Its totient is φ = 28150296.

The previous prime is 84450893. The next prime is 84450907. The reversal of 84450906 is 60905448.

It can be written as a sum of positive squares in only one way, i.e., 83557881 + 893025 = 9141^2 + 945^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84450907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2345841 + ... + 2345876.

Almost surely, 2^84450906 is an apocalyptic number.

84450906 is an abundant number, since it is smaller than the sum of its proper divisors (98526096).

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

84450906 is a wasteful number, since it uses less digits than its factorization.

84450906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691725 (or 4691722 counting only the distinct ones).

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

The square root of 84450906 is about 9189.7174058836. The cubic root of 84450906 is about 438.7341475267.

The spelling of 84450906 in words is "eighty-four million, four hundred fifty thousand, nine hundred six".