499844758009 has 27 divisors (see below), whose sum is σ = 532550603599. Its totient is φ = 469106649440.

The previous prime is 499844758003. The next prime is 499844758027. The reversal of 499844758009 is 900857448994.

The square root of 499844758009 is 706997.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 143340231609 + 356504526400 = 378603^2 + 597080^2 .

It is not a de Polignac number, because 499844758009 - 2⁵ = 499844757977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499844758003) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 959394669 + ... + 959395189.

Almost surely, 2^499844758009 is an apocalyptic number.

499844758009 is the 706997-th square number.

499844758009 is the 353499-th centered octagonal number.

It is an amenable number.

499844758009 is a deficient number, since it is larger than the sum of its proper divisors (32705845590).

499844758009 is an frugal number, since it uses more digits than its factorization.

499844758009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 499844758009 in words is "four hundred ninety-nine billion, eight hundred forty-four million, seven hundred fifty-eight thousand, nine".