4457669749 has 4 divisors (see below), whose sum is σ = 4800567436. Its totient is φ = 4114772064.

The previous prime is 4457669731. The next prime is 4457669761. The reversal of 4457669749 is 9479667544.

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 309408100 + 4148261649 = 17590^2 + 64407^2 .

It is not a de Polignac number, because 4457669749 - 2¹⁹ = 4457145461 is a prime.

It is a super-2 number, since 2×4457669749² = 39741639182299446002, 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 (4457669729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171448824 + ... + 171448849.

It is an arithmetic number, because the mean of its divisors is an integer number (1200141859).

Almost surely, 2^4457669749 is an apocalyptic number.

It is an amenable number.

4457669749 is a deficient number, since it is larger than the sum of its proper divisors (342897687).

4457669749 is a wasteful number, since it uses less digits than its factorization.

4457669749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342897686.

The product of its digits is 45722880, while the sum is 61.

The square root of 4457669749 is about 66765.7827708176. The cubic root of 4457669749 is about 1645.7705882378.

The spelling of 4457669749 in words is "four billion, four hundred fifty-seven million, six hundred sixty-nine thousand, seven hundred forty-nine".