442690974 has 128 divisors (see below), whose sum is σ = 1147392000. Its totient is φ = 125193600.

The previous prime is 442690967. The next prime is 442691009. The reversal of 442690974 is 479096244.

It is a super-2 number, since 2×442690974² = 391950596922137352, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533592 + ... + 534420.

It is an arithmetic number, because the mean of its divisors is an integer number (8964000).

Almost surely, 2^442690974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442690974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573696000).

442690974 is an abundant number, since it is smaller than the sum of its proper divisors (704701026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442690974 is a wasteful number, since it uses less digits than its factorization.

442690974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 442690974 is about 21040.2227649804. Note that the first 3 decimals coincide. The cubic root of 442690974 is about 762.1378943205.

The spelling of 442690974 in words is "four hundred forty-two million, six hundred ninety thousand, nine hundred seventy-four".