199490512 has 40 divisors (see below), whose sum is σ = 440737416. Its totient is φ = 86654976.

The previous prime is 199490413. The next prime is 199490527. The reversal of 199490512 is 215094991.

It can be written as a sum of positive squares in 4 ways, for example, as 30074256 + 169416256 = 5484^2 + 13016^2 .

It is a congruent number.

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, 24673 + ... + 31744.

Almost surely, 2^199490512 is an apocalyptic number.

It is an amenable number.

199490512 is an abundant number, since it is smaller than the sum of its proper divisors (241246904).

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

199490512 is a wasteful number, since it uses less digits than its factorization.

199490512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56455 (or 56449 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 199490512 is about 14124.1110162728. Note that the first 3 decimals coincide. The cubic root of 199490512 is about 584.3065413890.

It can be divided in two parts, 199490 and 512, that added together give a palindrome (200002).

The spelling of 199490512 in words is "one hundred ninety-nine million, four hundred ninety thousand, five hundred twelve".