990286444279 has 32 divisors (see below), whose sum is σ = 1121623437312. Its totient is φ = 866184192000.

The previous prime is 990286444253. The next prime is 990286444283. The reversal of 990286444279 is 972444682099.

It is a cyclic number.

It is not a de Polignac number, because 990286444279 - 2⁵ = 990286444247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990286444279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990286444079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47401174 + ... + 47422060.

It is an arithmetic number, because the mean of its divisors is an integer number (35050732416).

Almost surely, 2^990286444279 is an apocalyptic number.

990286444279 is a deficient number, since it is larger than the sum of its proper divisors (131336993033).

990286444279 is a wasteful number, since it uses less digits than its factorization.

990286444279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21727.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 990286444279 in words is "nine hundred ninety billion, two hundred eighty-six million, four hundred forty-four thousand, two hundred seventy-nine".