73215479 has 2 divisors, whose sum is σ = 73215480. Its totient is φ = 73215478.

The previous prime is 73215473. The next prime is 73215487. The reversal of 73215479 is 97451237.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73215479 - 2²⁰ = 72166903 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 (73215473) 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 as a sum of consecutive naturals, namely, 36607739 + 36607740.

It is an arithmetic number, because the mean of its divisors is an integer number (36607740).

Almost surely, 2^73215479 is an apocalyptic number.

73215479 is a deficient number, since it is larger than the sum of its proper divisors (1).

73215479 is an equidigital number, since it uses as much as digits as its factorization.

73215479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 73215479 is about 8556.6044082919. The cubic root of 73215479 is about 418.3447302317.

The spelling of 73215479 in words is "seventy-three million, two hundred fifteen thousand, four hundred seventy-nine".