999290516 has 18 divisors (see below), whose sum is σ = 2034270378. Its totient is φ = 428267280.

The previous prime is 999290507. The next prime is 999290533. The reversal of 999290516 is 615092999.

It can be written as a sum of positive squares in only one way, i.e., 814874116 + 184416400 = 28546^2 + 13580^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2549015 + ... + 2549406.

It is an arithmetic number, because the mean of its divisors is an integer number (113015021).

Almost surely, 2^999290516 is an apocalyptic number.

It is an amenable number.

999290516 is an abundant number, since it is smaller than the sum of its proper divisors (1034979862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999290516 is a wasteful number, since it uses less digits than its factorization.

999290516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098439 (or 5098430 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 50.

The square root of 999290516 is about 31611.5566842255. The cubic root of 999290516 is about 999.7634493816.

The spelling of 999290516 in words is "nine hundred ninety-nine million, two hundred ninety thousand, five hundred sixteen".