442667693 has 32 divisors (see below), whose sum is σ = 512397312. Its totient is φ = 379468800.

The previous prime is 442667677. The next prime is 442667707. The reversal of 442667693 is 396766244.

It is a cyclic number.

It is not a de Polignac number, because 442667693 - 2⁴ = 442667677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442667633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1205996 + ... + 1206362.

It is an arithmetic number, because the mean of its divisors is an integer number (16012416).

Almost surely, 2^442667693 is an apocalyptic number.

It is an amenable number.

442667693 is a deficient number, since it is larger than the sum of its proper divisors (69729619).

442667693 is a wasteful number, since it uses less digits than its factorization.

442667693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its digits is 1306368, while the sum is 47.

The square root of 442667693 is about 21039.6695078606. The cubic root of 442667693 is about 762.1245338769.

The spelling of 442667693 in words is "four hundred forty-two million, six hundred sixty-seven thousand, six hundred ninety-three".