442493393 has 4 divisors (see below), whose sum is σ = 449097840. Its totient is φ = 435888948.

The previous prime is 442493383. The next prime is 442493417. The reversal of 442493393 is 393394244.

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 442493393 - 2¹⁸ = 442231249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442493393.

It is not an unprimeable number, because it can be changed into a prime (442493383) 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, 3302123 + ... + 3302256.

It is an arithmetic number, because the mean of its divisors is an integer number (112274460).

Almost surely, 2^442493393 is an apocalyptic number.

It is an amenable number.

442493393 is a deficient number, since it is larger than the sum of its proper divisors (6604447).

442493393 is an equidigital number, since it uses as much as digits as its factorization.

442493393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6604446.

The product of its digits is 279936, while the sum is 41.

The square root of 442493393 is about 21035.5269247053. The cubic root of 442493393 is about 762.0244921321.

The spelling of 442493393 in words is "four hundred forty-two million, four hundred ninety-three thousand, three hundred ninety-three".