442499056989 has 8 divisors (see below), whose sum is σ = 643634992032. Its totient is φ = 268181246640.

The previous prime is 442499056973. The next prime is 442499056997. The reversal of 442499056989 is 989650994244.

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

It is not a de Polignac number, because 442499056989 - 2⁴ = 442499056973 is a prime.

It is a super-2 number, since 2×442499056989² (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 (442499056919) 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, 6704531134 + ... + 6704531199.

It is an arithmetic number, because the mean of its divisors is an integer number (80454374004).

Almost surely, 2^442499056989 is an apocalyptic number.

It is an amenable number.

442499056989 is a deficient number, since it is larger than the sum of its proper divisors (201135935043).

442499056989 is a wasteful number, since it uses less digits than its factorization.

442499056989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13409062347.

The product of its (nonzero) digits is 201553920, while the sum is 69.

The spelling of 442499056989 in words is "four hundred forty-two billion, four hundred ninety-nine million, fifty-six thousand, nine hundred eighty-nine".