74219477 has 2 divisors, whose sum is σ = 74219478. Its totient is φ = 74219476.

The previous prime is 74219441. The next prime is 74219489. The reversal of 74219477 is 77491247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73942801 + 276676 = 8599^2 + 526^2 .

It is a cyclic number.

It is not a de Polignac number, because 74219477 - 2¹⁸ = 73957333 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 (74219437) 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, 37109738 + 37109739.

It is an arithmetic number, because the mean of its divisors is an integer number (37109739).

Almost surely, 2^74219477 is an apocalyptic number.

It is an amenable number.

74219477 is a deficient number, since it is larger than the sum of its proper divisors (1).

74219477 is an equidigital number, since it uses as much as digits as its factorization.

74219477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 41.

The square root of 74219477 is about 8615.0726636518. The cubic root of 74219477 is about 420.2482980032.

The spelling of 74219477 in words is "seventy-four million, two hundred nineteen thousand, four hundred seventy-seven".