16119009 has 24 divisors (see below), whose sum is σ = 24864840. Its totient is φ = 10027008.

The previous prime is 16118987. The next prime is 16119017. The reversal of 16119009 is 90091161.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 12006225 = 2028^2 + 3465^2 .

It is not a de Polignac number, because 16119009 - 2¹² = 16114913 is a prime.

It is a super-2 number, since 2×16119009² = 519644902284162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16119209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20577 + ... + 21345.

It is an arithmetic number, because the mean of its divisors is an integer number (1036035).

Almost surely, 2^16119009 is an apocalyptic number.

It is an amenable number.

16119009 is a deficient number, since it is larger than the sum of its proper divisors (8745831).

16119009 is a wasteful number, since it uses less digits than its factorization.

16119009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 16119009 is about 4014.8485650146. The cubic root of 16119009 is about 252.6074254526.

It can be divided in two parts, 16 and 119009, that added together give a square (119025 = 345²).

The spelling of 16119009 in words is "sixteen million, one hundred nineteen thousand, nine".