442540477 has 4 divisors (see below), whose sum is σ = 452832160. Its totient is φ = 432248796.

The previous prime is 442540471. The next prime is 442540499. The reversal of 442540477 is 774045244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442540477 - 2⁷ = 442540349 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 (442540471) 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, 5145777 + ... + 5145862.

It is an arithmetic number, because the mean of its divisors is an integer number (113208040).

Almost surely, 2^442540477 is an apocalyptic number.

It is an amenable number.

442540477 is a deficient number, since it is larger than the sum of its proper divisors (10291683).

442540477 is a wasteful number, since it uses less digits than its factorization.

442540477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291682.

The product of its (nonzero) digits is 125440, while the sum is 37.

The square root of 442540477 is about 21036.6460492161. The cubic root of 442540477 is about 762.0515191938.

The spelling of 442540477 in words is "four hundred forty-two million, five hundred forty thousand, four hundred seventy-seven".