167221489 has 8 divisors (see below), whose sum is σ = 176277440. Its totient is φ = 158191056.

The previous prime is 167221487. The next prime is 167221499. The reversal of 167221489 is 984122761.

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

It is a cyclic number.

It is not a de Polignac number, because 167221489 - 2¹ = 167221487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (167221487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7924 + ... + 19930.

It is an arithmetic number, because the mean of its divisors is an integer number (22034680).

Almost surely, 2^167221489 is an apocalyptic number.

167221489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

167221489 is a deficient number, since it is larger than the sum of its proper divisors (9055951).

167221489 is a wasteful number, since it uses less digits than its factorization.

167221489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12759.

The product of its digits is 48384, while the sum is 40.

The square root of 167221489 is about 12931.4148104529. The cubic root of 167221489 is about 550.9311927764.

The spelling of 167221489 in words is "one hundred sixty-seven million, two hundred twenty-one thousand, four hundred eighty-nine".