442049961 has 4 divisors (see below), whose sum is σ = 589399952. Its totient is φ = 294699972.

The previous prime is 442049957. The next prime is 442049999. The reversal of 442049961 is 169940244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 442049961 - 2² = 442049957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442049911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73674991 + ... + 73674996.

It is an arithmetic number, because the mean of its divisors is an integer number (147349988).

Almost surely, 2^442049961 is an apocalyptic number.

It is an amenable number.

442049961 is a deficient number, since it is larger than the sum of its proper divisors (147349991).

442049961 is a wasteful number, since it uses less digits than its factorization.

442049961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147349990.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 442049961 is about 21024.9842092687. The cubic root of 442049961 is about 761.7698600954.

The spelling of 442049961 in words is "four hundred forty-two million, forty-nine thousand, nine hundred sixty-one".