442349997 has 16 divisors (see below), whose sum is σ = 598725120. Its totient is φ = 290449152.

The previous prime is 442349989. The next prime is 442350019. The reversal of 442349997 is 799943244.

It is not a de Polignac number, because 442349997 - 2³ = 442349989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442349497) 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, 281508 + ... + 283074.

It is an arithmetic number, because the mean of its divisors is an integer number (37420320).

Almost surely, 2^442349997 is an apocalyptic number.

It is an amenable number.

442349997 is a deficient number, since it is larger than the sum of its proper divisors (156375123).

442349997 is a wasteful number, since it uses less digits than its factorization.

442349997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932.

The product of its digits is 1959552, while the sum is 51.

The square root of 442349997 is about 21032.1182242778. The cubic root of 442349997 is about 761.9421684398.

The spelling of 442349997 in words is "four hundred forty-two million, three hundred forty-nine thousand, nine hundred ninety-seven".