4086985690442 has 4 divisors (see below), whose sum is σ = 6130478535666. Its totient is φ = 2043492845220.

The previous prime is 4086985690441. The next prime is 4086985690493. The reversal of 4086985690442 is 2440965896804.

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

It can be written as a sum of positive squares in only one way, i.e., 3999796002601 + 87189687841 = 1999949^2 + 295279^2 .

It is not an unprimeable number, because it can be changed into a prime (4086985690441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021746422609 + ... + 1021746422612.

Almost surely, 2^{4086985690442} is an apocalyptic number.

4086985690442 is a deficient number, since it is larger than the sum of its proper divisors (2043492845224).

4086985690442 is a wasteful number, since it uses less digits than its factorization.

4086985690442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043492845223.

The product of its (nonzero) digits is 119439360, while the sum is 65.

The spelling of 4086985690442 in words is "four trillion, eighty-six billion, nine hundred eighty-five million, six hundred ninety thousand, four hundred forty-two".