72874229 has 2 divisors, whose sum is σ = 72874230. Its totient is φ = 72874228.

The previous prime is 72874171. The next prime is 72874237. The reversal of 72874229 is 92247827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 20702500 = 7223^2 + 4550^2 .

It is a cyclic number.

It is not a de Polignac number, because 72874229 - 2⁸ = 72873973 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 (72874279) 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, 36437114 + 36437115.

It is an arithmetic number, because the mean of its divisors is an integer number (36437115).

Almost surely, 2^72874229 is an apocalyptic number.

It is an amenable number.

72874229 is a deficient number, since it is larger than the sum of its proper divisors (1).

72874229 is an equidigital number, since it uses as much as digits as its factorization.

72874229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 72874229 is about 8536.6403813210. The cubic root of 72874229 is about 417.6937635502.

The spelling of 72874229 in words is "seventy-two million, eight hundred seventy-four thousand, two hundred twenty-nine".