74726429 has 2 divisors, whose sum is σ = 74726430. Its totient is φ = 74726428.

The previous prime is 74726413. The next prime is 74726467. The reversal of 74726429 is 92462747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 15405625 = 7702^2 + 3925^2 .

It is a cyclic number.

It is not a de Polignac number, because 74726429 - 2⁴ = 74726413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74726329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37363214 + 37363215.

It is an arithmetic number, because the mean of its divisors is an integer number (37363215).

Almost surely, 2^74726429 is an apocalyptic number.

It is an amenable number.

74726429 is a deficient number, since it is larger than the sum of its proper divisors (1).

74726429 is an equidigital number, since it uses as much as digits as its factorization.

74726429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 74726429 is about 8644.4449792916. Note that the first 3 decimals coincide. The cubic root of 74726429 is about 421.2029552373.

The spelling of 74726429 in words is "seventy-four million, seven hundred twenty-six thousand, four hundred twenty-nine".