172446489 has 40 divisors (see below), whose sum is σ = 274428000. Its totient is φ = 107604288.

The previous prime is 172446481. The next prime is 172446497. The reversal of 172446489 is 984644271.

It is an interprime number because it is at equal distance from previous prime (172446481) and next prime (172446497).

It is not a de Polignac number, because 172446489 - 2³ = 172446481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172446481) 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 39 ways as a sum of consecutive naturals, for example, 136342 + ... + 137600.

It is an arithmetic number, because the mean of its divisors is an integer number (6860700).

Almost surely, 2^172446489 is an apocalyptic number.

172446489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

172446489 is a deficient number, since it is larger than the sum of its proper divisors (101981511).

172446489 is a wasteful number, since it uses less digits than its factorization.

172446489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379 (or 1370 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 172446489 is about 13131.8882496007. Note that the first 3 decimals coincide. The cubic root of 172446489 is about 556.6105737082.

The spelling of 172446489 in words is "one hundred seventy-two million, four hundred forty-six thousand, four hundred eighty-nine".