9885287690 has 16 divisors (see below), whose sum is σ = 18172104192. Its totient is φ = 3869984784.

The previous prime is 9885287639. The next prime is 9885287747. The reversal of 9885287690 is 967825889.

It is a super-2 number, since 2×9885287690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10515794 + ... + 10516733.

It is an arithmetic number, because the mean of its divisors is an integer number (1135756512).

Almost surely, 2^9885287690 is an apocalyptic number.

9885287690 is a deficient number, since it is larger than the sum of its proper divisors (8286816502).

9885287690 is a wasteful number, since it uses less digits than its factorization.

9885287690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21032581.

The product of its (nonzero) digits is 17418240, while the sum is 62.

The square root of 9885287690 is about 99424.7840832456. The cubic root of 9885287690 is about 2146.1649817124.

The spelling of 9885287690 in words is "nine billion, eight hundred eighty-five million, two hundred eighty-seven thousand, six hundred ninety".