442163093 has 2 divisors, whose sum is σ = 442163094. Its totient is φ = 442163092.

The previous prime is 442163089. The next prime is 442163119. The reversal of 442163093 is 390361244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340697764 + 101465329 = 18458^2 + 10073^2 .

It is a cyclic number.

It is not a de Polignac number, because 442163093 - 2² = 442163089 is a prime.

It is a super-2 number, since 2×442163093² = 391016401622653298, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442163593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221081546 + 221081547.

It is an arithmetic number, because the mean of its divisors is an integer number (221081547).

Almost surely, 2^442163093 is an apocalyptic number.

It is an amenable number.

442163093 is a deficient number, since it is larger than the sum of its proper divisors (1).

442163093 is an equidigital number, since it uses as much as digits as its factorization.

442163093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 442163093 is about 21027.6744553457. The cubic root of 442163093 is about 761.8348400784.

The spelling of 442163093 in words is "four hundred forty-two million, one hundred sixty-three thousand, ninety-three".