442152993407 has 4 divisors (see below), whose sum is σ = 443834183760. Its totient is φ = 440471803056.

The previous prime is 442152993371. The next prime is 442152993413. The reversal of 442152993407 is 704399251244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442152993407 - 2¹⁰ = 442152992383 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 (442152993467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840594782 + ... + 840595307.

It is an arithmetic number, because the mean of its divisors is an integer number (110958545940).

Almost surely, 2^442152993407 is an apocalyptic number.

442152993407 is a deficient number, since it is larger than the sum of its proper divisors (1681190353).

442152993407 is a wasteful number, since it uses less digits than its factorization.

442152993407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681190352.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 442152993407 in words is "four hundred forty-two billion, one hundred fifty-two million, nine hundred ninety-three thousand, four hundred seven".