74821469 has 2 divisors, whose sum is σ = 74821470. Its totient is φ = 74821468.

The previous prime is 74821457. The next prime is 74821489. The reversal of 74821469 is 96412847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74476900 + 344569 = 8630^2 + 587^2 .

It is an emirp because it is prime and its reverse (96412847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74821469 - 2²⁰ = 73772893 is a prime.

It is a super-2 number, since 2×74821469² = 11196504446635922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74821489) 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, 37410734 + 37410735.

It is an arithmetic number, because the mean of its divisors is an integer number (37410735).

Almost surely, 2^74821469 is an apocalyptic number.

It is an amenable number.

74821469 is a deficient number, since it is larger than the sum of its proper divisors (1).

74821469 is an equidigital number, since it uses as much as digits as its factorization.

74821469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 74821469 is about 8649.9404044190. The cubic root of 74821469 is about 421.3814470611.

It can be divided in two parts, 74 and 821469, that multiplied together give a palindrome (60788706).

The spelling of 74821469 in words is "seventy-four million, eight hundred twenty-one thousand, four hundred sixty-nine".