172473479 has 2 divisors, whose sum is σ = 172473480. Its totient is φ = 172473478.

The previous prime is 172473463. The next prime is 172473487. The reversal of 172473479 is 974374271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172473479 - 2⁴ = 172473463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172473439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86236739 + 86236740.

It is an arithmetic number, because the mean of its divisors is an integer number (86236740).

Almost surely, 2^172473479 is an apocalyptic number.

172473479 is a deficient number, since it is larger than the sum of its proper divisors (1).

172473479 is an equidigital number, since it uses as much as digits as its factorization.

172473479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 44.

The square root of 172473479 is about 13132.9158605391. The cubic root of 172473479 is about 556.6396109973.

The spelling of 172473479 in words is "one hundred seventy-two million, four hundred seventy-three thousand, four hundred seventy-nine".