442213491 has 8 divisors (see below), whose sum is σ = 590024704. Its totient is φ = 294605640.

The previous prime is 442213483. The next prime is 442213493. The reversal of 442213491 is 194312244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442213491 - 2³ = 442213483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442213493) 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, 45691 + ... + 54516.

It is an arithmetic number, because the mean of its divisors is an integer number (73753088).

Almost surely, 2^442213491 is an apocalyptic number.

442213491 is a deficient number, since it is larger than the sum of its proper divisors (147811213).

442213491 is a wasteful number, since it uses less digits than its factorization.

442213491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101681.

The product of its digits is 6912, while the sum is 30.

The square root of 442213491 is about 21028.8727943273. The cubic root of 442213491 is about 761.8637837677.

The spelling of 442213491 in words is "four hundred forty-two million, two hundred thirteen thousand, four hundred ninety-one".