442147208 has 8 divisors (see below), whose sum is σ = 829026030. Its totient is φ = 221073600.

The previous prime is 442147201. The next prime is 442147213. The reversal of 442147208 is 802741244.

It can be written as a sum of positive squares in only one way, i.e., 421152484 + 20994724 = 20522^2 + 4582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (442147201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27634193 + ... + 27634208.

Almost surely, 2^442147208 is an apocalyptic number.

It is an amenable number.

442147208 is a deficient number, since it is larger than the sum of its proper divisors (386878822).

442147208 is a wasteful number, since it uses less digits than its factorization.

442147208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55268407 (or 55268403 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 442147208 is about 21027.2967354342. The cubic root of 442147208 is about 761.8257168299.

The spelling of 442147208 in words is "four hundred forty-two million, one hundred forty-seven thousand, two hundred eight".