990486522869 has 4 divisors (see below), whose sum is σ = 990562686144. Its totient is φ = 990410359596.

The previous prime is 990486522863. The next prime is 990486522871. The reversal of 990486522869 is 968225684099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 990486522869 - 2²⁴ = 990469745653 is a prime.

It is a super-2 number, since 2×990486522869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990486522799 and 990486522808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990486522863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38062127 + ... + 38088140.

It is an arithmetic number, because the mean of its divisors is an integer number (247640671536).

Almost surely, 2^990486522869 is an apocalyptic number.

It is an amenable number.

990486522869 is a deficient number, since it is larger than the sum of its proper divisors (76163275).

990486522869 is a wasteful number, since it uses less digits than its factorization.

990486522869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76163274.

The product of its (nonzero) digits is 134369280, while the sum is 68.

The spelling of 990486522869 in words is "nine hundred ninety billion, four hundred eighty-six million, five hundred twenty-two thousand, eight hundred sixty-nine".