1499890009 has 8 divisors (see below), whose sum is σ = 1536464160. Its totient is φ = 1463392896.

The previous prime is 1499889997. The next prime is 1499890013. The reversal of 1499890009 is 9000989941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1499890009 - 2¹⁵ = 1499857241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1499890309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21174 + ... + 58720.

It is an arithmetic number, because the mean of its divisors is an integer number (192058020).

Almost surely, 2^1499890009 is an apocalyptic number.

It is an amenable number.

1499890009 is a deficient number, since it is larger than the sum of its proper divisors (36574151).

1499890009 is an equidigital number, since it uses as much as digits as its factorization.

1499890009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38519.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 1499890009 is about 38728.4134583383. The cubic root of 1499890009 is about 1144.6862622551.

It can be divided in two parts, 149989000 and 9, that added together give a square (149989009 = 12247²).

The spelling of 1499890009 in words is "one billion, four hundred ninety-nine million, eight hundred ninety thousand, nine".