442693669 has 4 divisors (see below), whose sum is σ = 482938560. Its totient is φ = 402448780.

The previous prime is 442693663. The next prime is 442693703. The reversal of 442693669 is 966396244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442693669 - 2⁵ = 442693637 is a prime.

It is a super-2 number, since 2×442693669² = 391955369145363122, 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 (442693663) 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, 20122429 + ... + 20122450.

It is an arithmetic number, because the mean of its divisors is an integer number (120734640).

Almost surely, 2^442693669 is an apocalyptic number.

It is an amenable number.

442693669 is a deficient number, since it is larger than the sum of its proper divisors (40244891).

442693669 is a wasteful number, since it uses less digits than its factorization.

442693669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40244890.

The product of its digits is 1679616, while the sum is 49.

The square root of 442693669 is about 21040.2868088817. The cubic root of 442693669 is about 762.1394408903.

The spelling of 442693669 in words is "four hundred forty-two million, six hundred ninety-three thousand, six hundred sixty-nine".