442750647 has 4 divisors (see below), whose sum is σ = 590334200. Its totient is φ = 295167096.

The previous prime is 442750639. The next prime is 442750657. The reversal of 442750647 is 746057244.

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

It is not a de Polignac number, because 442750647 - 2³ = 442750639 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 (442750657) 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, 73791772 + ... + 73791777.

It is an arithmetic number, because the mean of its divisors is an integer number (147583550).

Almost surely, 2^442750647 is an apocalyptic number.

442750647 is a deficient number, since it is larger than the sum of its proper divisors (147583553).

442750647 is a wasteful number, since it uses less digits than its factorization.

442750647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147583552.

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 442750647 is about 21041.6407867828. The cubic root of 442750647 is about 762.1721371775.

The spelling of 442750647 in words is "four hundred forty-two million, seven hundred fifty thousand, six hundred forty-seven".