74724469 has 4 divisors (see below), whose sum is σ = 79120044. Its totient is φ = 70328896.

The previous prime is 74724467. The next prime is 74724487. The reversal of 74724469 is 96442747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42745444 + 31979025 = 6538^2 + 5655^2 .

It is a cyclic number.

It is not a de Polignac number, because 74724469 - 2¹ = 74724467 is a prime.

It is a super-2 number, since 2×74724469² = 11167492534663922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74724467) 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 in 3 ways as a sum of consecutive naturals, for example, 2197762 + ... + 2197795.

It is an arithmetic number, because the mean of its divisors is an integer number (19780011).

Almost surely, 2^74724469 is an apocalyptic number.

It is an amenable number.

74724469 is a deficient number, since it is larger than the sum of its proper divisors (4395575).

74724469 is a wasteful number, since it uses less digits than its factorization.

74724469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395574.

The product of its digits is 338688, while the sum is 43.

The square root of 74724469 is about 8644.3316109460. The cubic root of 74724469 is about 421.1992726267.

The spelling of 74724469 in words is "seventy-four million, seven hundred twenty-four thousand, four hundred sixty-nine".