4487942665 has 4 divisors (see below), whose sum is σ = 5385531204. Its totient is φ = 3590354128.

The previous prime is 4487942617. The next prime is 4487942737. The reversal of 4487942665 is 5662497844.

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

It can be written as a sum of positive squares in 2 ways, for example, as 965282761 + 3522659904 = 31069^2 + 59352^2 .

It is a cyclic number.

It is not a de Polignac number, because 4487942665 - 2⁹ = 4487942153 is a prime.

It is a super-3 number, since 3×4487942665³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448794262 + ... + 448794271.

It is an arithmetic number, because the mean of its divisors is an integer number (1346382801).

Almost surely, 2^4487942665 is an apocalyptic number.

It is an amenable number.

4487942665 is a deficient number, since it is larger than the sum of its proper divisors (897588539).

4487942665 is an equidigital number, since it uses as much as digits as its factorization.

4487942665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897588538.

The product of its digits is 11612160, while the sum is 55.

The square root of 4487942665 is about 66992.1089756100. The cubic root of 4487942665 is about 1649.4877705979.

The spelling of 4487942665 in words is "four billion, four hundred eighty-seven million, nine hundred forty-two thousand, six hundred sixty-five".