442422404391 has 64 divisors (see below), whose sum is σ = 683596247040. Its totient is φ = 251965056000.

The previous prime is 442422404383. The next prime is 442422404497. The reversal of 442422404391 is 193404224244.

It is not a de Polignac number, because 442422404391 - 2³ = 442422404383 is a prime.

It is a super-2 number, since 2×442422404391² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442422404591) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16505386 + ... + 16532168.

It is an arithmetic number, because the mean of its divisors is an integer number (10681191360).

Almost surely, 2^442422404391 is an apocalyptic number.

442422404391 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

442422404391 is a deficient number, since it is larger than the sum of its proper divisors (241173842649).

442422404391 is a wasteful number, since it uses less digits than its factorization.

442422404391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27288.

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 442422404391 in words is "four hundred forty-two billion, four hundred twenty-two million, four hundred four thousand, three hundred ninety-one".