442415311 has 8 divisors (see below), whose sum is σ = 478868544. Its totient is φ = 406308000.

The previous prime is 442415287. The next prime is 442415317. The reversal of 442415311 is 113514244.

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

It is a cyclic number.

It is not a de Polignac number, because 442415311 - 2⁵ = 442415279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442415317) 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, 83815 + ... + 88936.

It is an arithmetic number, because the mean of its divisors is an integer number (59858568).

Almost surely, 2^442415311 is an apocalyptic number.

442415311 is a deficient number, since it is larger than the sum of its proper divisors (36453233).

442415311 is a wasteful number, since it uses less digits than its factorization.

442415311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172961.

The product of its digits is 1920, while the sum is 25.

The square root of 442415311 is about 21033.6708874129. The cubic root of 442415311 is about 761.9796674353.

Adding to 442415311 its reverse (113514244), we get a palindrome (555929555).

The spelling of 442415311 in words is "four hundred forty-two million, four hundred fifteen thousand, three hundred eleven".