84019970 has 16 divisors (see below), whose sum is σ = 155324088. Its totient is φ = 32699520.

The previous prime is 84019939. The next prime is 84019993. The reversal of 84019970 is 7991048.

It can be written as a sum of positive squares in 4 ways, for example, as 70174129 + 13845841 = 8377^2 + 3721^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113171 + ... + 113910.

Almost surely, 2^84019970 is an apocalyptic number.

84019970 is a deficient number, since it is larger than the sum of its proper divisors (71304118).

84019970 is a wasteful number, since it uses less digits than its factorization.

84019970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227125.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 84019970 is about 9166.2407779853. The cubic root of 84019970 is about 437.9866171901.

The spelling of 84019970 in words is "eighty-four million, nineteen thousand, nine hundred seventy".