442907487 has 16 divisors (see below), whose sum is σ = 715810560. Its totient is φ = 268428600.

The previous prime is 442907471. The next prime is 442907489. The reversal of 442907487 is 784709244.

It is not a de Polignac number, because 442907487 - 2⁴ = 442907471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442907489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745339 + ... + 745932.

It is an arithmetic number, because the mean of its divisors is an integer number (44738160).

Almost surely, 2^442907487 is an apocalyptic number.

442907487 is a deficient number, since it is larger than the sum of its proper divisors (272903073).

442907487 is a wasteful number, since it uses less digits than its factorization.

442907487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491291 (or 1491285 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 442907487 is about 21045.3673524603. The cubic root of 442907487 is about 762.2621238449.

The spelling of 442907487 in words is "four hundred forty-two million, nine hundred seven thousand, four hundred eighty-seven".