74239229 has 2 divisors, whose sum is σ = 74239230. Its totient is φ = 74239228.

The previous prime is 74239219. The next prime is 74239313. The reversal of 74239229 is 92293247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71995225 + 2244004 = 8485^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 74239229 - 2²⁰ = 73190653 is a prime.

It is a super-2 number, since 2×74239229² = 11022926245028882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74239192 and 74239201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74239219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37119614 + 37119615.

It is an arithmetic number, because the mean of its divisors is an integer number (37119615).

Almost surely, 2^74239229 is an apocalyptic number.

It is an amenable number.

74239229 is a deficient number, since it is larger than the sum of its proper divisors (1).

74239229 is an equidigital number, since it uses as much as digits as its factorization.

74239229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 74239229 is about 8616.2189503285. The cubic root of 74239229 is about 420.2855748676.

The spelling of 74239229 in words is "seventy-four million, two hundred thirty-nine thousand, two hundred twenty-nine".