170472389 has 8 divisors (see below), whose sum is σ = 187247040. Its totient is φ = 154478016.

The previous prime is 170472331. The next prime is 170472391. The reversal of 170472389 is 983274071.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170472389 is a prime.

It is a super-2 number, since 2×170472389² = 58121670822734642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170472319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194612 + ... + 195485.

It is an arithmetic number, because the mean of its divisors is an integer number (23405880).

Almost surely, 2^170472389 is an apocalyptic number.

170472389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

170472389 is a deficient number, since it is larger than the sum of its proper divisors (16774651).

170472389 is a wasteful number, since it uses less digits than its factorization.

170472389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390139.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 170472389 is about 13056.5075345592. The cubic root of 170472389 is about 554.4784636112.

The spelling of 170472389 in words is "one hundred seventy million, four hundred seventy-two thousand, three hundred eighty-nine".