172448399 has 2 divisors, whose sum is σ = 172448400. Its totient is φ = 172448398.

The previous prime is 172448387. The next prime is 172448449. The reversal of 172448399 is 993844271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172448399 - 2⁴ = 172448383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172448599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86224199 + 86224200.

It is an arithmetic number, because the mean of its divisors is an integer number (86224200).

Almost surely, 2^172448399 is an apocalyptic number.

172448399 is a deficient number, since it is larger than the sum of its proper divisors (1).

172448399 is an equidigital number, since it uses as much as digits as its factorization.

172448399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 172448399 is about 13131.9609731373. The cubic root of 172448399 is about 556.6126286882.

The spelling of 172448399 in words is "one hundred seventy-two million, four hundred forty-eight thousand, three hundred ninety-nine".