84398625 has 64 divisors (see below), whose sum is σ = 165335040. Its totient is φ = 42336000.

The previous prime is 84398621. The next prime is 84398653. The reversal of 84398625 is 52689348.

It is not a de Polignac number, because 84398625 - 2² = 84398621 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (84398621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56640 + ... + 58110.

It is an arithmetic number, because the mean of its divisors is an integer number (2583360).

Almost surely, 2^84398625 is an apocalyptic number.

84398625 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

84398625 is a deficient number, since it is larger than the sum of its proper divisors (80936415).

84398625 is a wasteful number, since it uses less digits than its factorization.

84398625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1496 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 84398625 is about 9186.8724275457. The cubic root of 84398625 is about 438.6435931601.

The spelling of 84398625 in words is "eighty-four million, three hundred ninety-eight thousand, six hundred twenty-five".