84172370 has 8 divisors (see below), whose sum is σ = 151510284. Its totient is φ = 33668944.

The previous prime is 84172357. The next prime is 84172379. The reversal of 84172370 is 7327148.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 75463969 + 8708401 = 8687^2 + 2951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (84172379) 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 3 ways as a sum of consecutive naturals, for example, 4208609 + ... + 4208628.

Almost surely, 2^84172370 is an apocalyptic number.

84172370 is a deficient number, since it is larger than the sum of its proper divisors (67337914).

84172370 is a wasteful number, since it uses less digits than its factorization.

84172370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8417244.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 84172370 is about 9174.5501252105. The cubic root of 84172370 is about 438.2512719039.

The spelling of 84172370 in words is "eighty-four million, one hundred seventy-two thousand, three hundred seventy".