445542387 has 8 divisors (see below), whose sum is σ = 594401280. Its totient is φ = 296855880.

The previous prime is 445542373. The next prime is 445542401. The reversal of 445542387 is 783245544.

It is an interprime number because it is at equal distance from previous prime (445542373) and next prime (445542401).

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

It is not a de Polignac number, because 445542387 - 2¹⁰ = 445541363 is a prime.

It is a super-2 number, since 2×445542387² = 397016037227315538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445542347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36939 + ... + 47492.

It is an arithmetic number, because the mean of its divisors is an integer number (74300160).

Almost surely, 2^445542387 is an apocalyptic number.

445542387 is a deficient number, since it is larger than the sum of its proper divisors (148858893).

445542387 is a wasteful number, since it uses less digits than its factorization.

445542387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86193.

The product of its digits is 537600, while the sum is 42.

The square root of 445542387 is about 21107.8749996299. The cubic root of 445542387 is about 763.7707268455.

The spelling of 445542387 in words is "four hundred forty-five million, five hundred forty-two thousand, three hundred eighty-seven".