442343910 has 64 divisors (see below), whose sum is σ = 1138406400. Its totient is φ = 109604352.

The previous prime is 442343897. The next prime is 442343911. The reversal of 442343910 is 19343244.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442343911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34801 + ... + 45779.

It is an arithmetic number, because the mean of its divisors is an integer number (17787600).

Almost surely, 2^442343910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442343910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569203200).

442343910 is an abundant number, since it is smaller than the sum of its proper divisors (696062490).

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

442343910 is a wasteful number, since it uses less digits than its factorization.

442343910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11085.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 442343910 is about 21031.9735165295. The cubic root of 442343910 is about 761.9386734974.

The spelling of 442343910 in words is "four hundred forty-two million, three hundred forty-three thousand, nine hundred ten".