442354769 has 4 divisors (see below), whose sum is σ = 444798900. Its totient is φ = 439910640.

The previous prime is 442354747. The next prime is 442354811. The reversal of 442354769 is 967453244.

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 101767744 + 340587025 = 10088^2 + 18455^2 .

It is a cyclic number.

It is not a de Polignac number, because 442354769 - 2¹⁶ = 442289233 is a prime.

It is a super-2 number, since 2×442354769² = 391355483314086722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442354169) 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, 1221794 + ... + 1222155.

It is an arithmetic number, because the mean of its divisors is an integer number (111199725).

Almost surely, 2^442354769 is an apocalyptic number.

It is an amenable number.

442354769 is a deficient number, since it is larger than the sum of its proper divisors (2444131).

442354769 is a wasteful number, since it uses less digits than its factorization.

442354769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444130.

The product of its digits is 725760, while the sum is 44.

The square root of 442354769 is about 21032.2316695114. The cubic root of 442354769 is about 761.9449083328.

The spelling of 442354769 in words is "four hundred forty-two million, three hundred fifty-four thousand, seven hundred sixty-nine".