442169712 has 40 divisors (see below), whose sum is σ = 1269192080. Its totient is φ = 147389760.

The previous prime is 442169639. The next prime is 442169713. The reversal of 442169712 is 217961244.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442169713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511339 + ... + 512202.

It is an arithmetic number, because the mean of its divisors is an integer number (31729802).

Almost surely, 2^442169712 is an apocalyptic number.

It is an amenable number.

442169712 is an abundant number, since it is smaller than the sum of its proper divisors (827022368).

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

442169712 is a wasteful number, since it uses less digits than its factorization.

442169712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023558 (or 1023546 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 442169712 is about 21027.8318425842. The cubic root of 442169712 is about 761.8386415110.

The spelling of 442169712 in words is "four hundred forty-two million, one hundred sixty-nine thousand, seven hundred twelve".