148172289 has 8 divisors (see below), whose sum is σ = 209184480. Its totient is φ = 92970816.

The previous prime is 148172201. The next prime is 148172293. The reversal of 148172289 is 982271841.

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

It is not a de Polignac number, because 148172289 - 2¹² = 148168193 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 148172289.

It is not an unprimeable number, because it can be changed into a prime (148152289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1452619 + ... + 1452720.

It is an arithmetic number, because the mean of its divisors is an integer number (26148060).

Almost surely, 2^148172289 is an apocalyptic number.

It is an amenable number.

148172289 is a deficient number, since it is larger than the sum of its proper divisors (61012191).

148172289 is a wasteful number, since it uses less digits than its factorization.

148172289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905359.

The product of its digits is 64512, while the sum is 42.

The square root of 148172289 is about 12172.6040352917. The cubic root of 148172289 is about 529.1624233386.

The spelling of 148172289 in words is "one hundred forty-eight million, one hundred seventy-two thousand, two hundred eighty-nine".