84203985 has 16 divisors (see below), whose sum is σ = 135072000. Its totient is φ = 44793600.

The previous prime is 84203983. The next prime is 84203993. The reversal of 84203985 is 58930248.

It is a happy number.

It is not a de Polignac number, because 84203985 - 2¹ = 84203983 is a prime.

It is a super-2 number, since 2×84203985² = 14180622179760450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84203983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985 + ... + 13014.

It is an arithmetic number, because the mean of its divisors is an integer number (8442000).

Almost surely, 2^84203985 is an apocalyptic number.

It is an amenable number.

84203985 is a deficient number, since it is larger than the sum of its proper divisors (50868015).

84203985 is a wasteful number, since it uses less digits than its factorization.

84203985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14408.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 84203985 is about 9176.2729362198. The cubic root of 84203985 is about 438.3061338482.

The spelling of 84203985 in words is "eighty-four million, two hundred three thousand, nine hundred eighty-five".