84464840 has 32 divisors (see below), whose sum is σ = 201226680. Its totient is φ = 31798272.

The previous prime is 84464833. The next prime is 84464851. The reversal of 84464840 is 4846448.

It can be written as a sum of positive squares in 4 ways, for example, as 71605444 + 12859396 = 8462^2 + 3586^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84464794 and 84464803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61427 + ... + 62786.

Almost surely, 2^84464840 is an apocalyptic number.

It is an amenable number.

84464840 is an abundant number, since it is smaller than the sum of its proper divisors (116761840).

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

84464840 is a wasteful number, since it uses less digits than its factorization.

84464840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124241 (or 124237 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 84464840 is about 9190.4755045645. The cubic root of 84464840 is about 438.7582758860.

The spelling of 84464840 in words is "eighty-four million, four hundred sixty-four thousand, eight hundred forty".