442998369 has 16 divisors (see below), whose sum is σ = 715957440. Its totient is φ = 268483680.

The previous prime is 442998349. The next prime is 442998389. The reversal of 442998369 is 963899244.

It is an interprime number because it is at equal distance from previous prime (442998349) and next prime (442998389).

It is not a de Polignac number, because 442998369 - 2⁵ = 442998337 is a prime.

It is a super-2 number, since 2×442998369² = 392495109873320322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442998349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745492 + ... + 746085.

It is an arithmetic number, because the mean of its divisors is an integer number (44747340).

Almost surely, 2^442998369 is an apocalyptic number.

It is an amenable number.

442998369 is a deficient number, since it is larger than the sum of its proper divisors (272959071).

442998369 is a wasteful number, since it uses less digits than its factorization.

442998369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491597 (or 1491591 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 442998369 is about 21047.5264342393. The cubic root of 442998369 is about 762.3142575076.

The spelling of 442998369 in words is "four hundred forty-two million, nine hundred ninety-eight thousand, three hundred sixty-nine".