442946090 has 8 divisors (see below), whose sum is σ = 797302980. Its totient is φ = 177178432.

The previous prime is 442946089. The next prime is 442946093. The reversal of 442946090 is 90649244.

It can be written as a sum of positive squares in 2 ways, for example, as 437688241 + 5257849 = 20921^2 + 2293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (442946093) 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, 22147295 + ... + 22147314.

Almost surely, 2^442946090 is an apocalyptic number.

442946090 is a deficient number, since it is larger than the sum of its proper divisors (354356890).

442946090 is a wasteful number, since it uses less digits than its factorization.

442946090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44294616.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 442946090 is about 21046.2844701862. The cubic root of 442946090 is about 762.2842689887.

The spelling of 442946090 in words is "four hundred forty-two million, nine hundred forty-six thousand, ninety".