74857469 has 2 divisors, whose sum is σ = 74857470. Its totient is φ = 74857468.

The previous prime is 74857457. The next prime is 74857493. The reversal of 74857469 is 96475847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 34969 = 8650^2 + 187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74857469 is a prime.

It is a super-2 number, since 2×74857469² = 11207281330171922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74857499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37428734 + 37428735.

It is an arithmetic number, because the mean of its divisors is an integer number (37428735).

Almost surely, 2^74857469 is an apocalyptic number.

It is an amenable number.

74857469 is a deficient number, since it is larger than the sum of its proper divisors (1).

74857469 is an equidigital number, since it uses as much as digits as its factorization.

74857469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The square root of 74857469 is about 8652.0210933631. The cubic root of 74857469 is about 421.4490181294.

The spelling of 74857469 in words is "seventy-four million, eight hundred fifty-seven thousand, four hundred sixty-nine".