442197915 has 32 divisors (see below), whose sum is σ = 744399936. Its totient is φ = 223856640.

The previous prime is 442197911. The next prime is 442197929. The reversal of 442197915 is 519791244.

It is not a de Polignac number, because 442197915 - 2² = 442197911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442197911) 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, 13039 + ... + 32471.

It is an arithmetic number, because the mean of its divisors is an integer number (23262498).

Almost surely, 2^442197915 is an apocalyptic number.

442197915 is a deficient number, since it is larger than the sum of its proper divisors (302202021).

442197915 is a wasteful number, since it uses less digits than its factorization.

442197915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19519.

The product of its digits is 90720, while the sum is 42.

The square root of 442197915 is about 21028.5024431128. The cubic root of 442197915 is about 761.8548386693.

The spelling of 442197915 in words is "four hundred forty-two million, one hundred ninety-seven thousand, nine hundred fifteen".