442378299 has 24 divisors (see below), whose sum is σ = 652012816. Its totient is φ = 266587200.

The previous prime is 442378271. The next prime is 442378309. The reversal of 442378299 is 992873244.

It is not a de Polignac number, because 442378299 - 2⁷ = 442378171 is a prime.

It is a super-2 number, since 2×442378299² = 391397118852266802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442378219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62337 + ... + 69069.

Almost surely, 2^442378299 is an apocalyptic number.

442378299 is a deficient number, since it is larger than the sum of its proper divisors (209634517).

442378299 is a wasteful number, since it uses less digits than its factorization.

442378299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939 (or 6928 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 442378299 is about 21032.7910416093. The cubic root of 442378299 is about 761.9584180367.

The spelling of 442378299 in words is "four hundred forty-two million, three hundred seventy-eight thousand, two hundred ninety-nine".