73199609 has 24 divisors (see below), whose sum is σ = 89611200. Its totient is φ = 58555872.

The previous prime is 73199591. The next prime is 73199641. The reversal of 73199609 is 90699137.

It is a happy number.

It is not a de Polignac number, because 73199609 - 2¹⁶ = 73134073 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 73199609.

It is not an unprimeable number, because it can be changed into a prime (73199699) 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, 209567 + ... + 209915.

It is an arithmetic number, because the mean of its divisors is an integer number (3733800).

Almost surely, 2^73199609 is an apocalyptic number.

It is an amenable number.

73199609 is a deficient number, since it is larger than the sum of its proper divisors (16411591).

73199609 is a wasteful number, since it uses less digits than its factorization.

73199609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 73199609 is about 8555.6770041885. The cubic root of 73199609 is about 418.3145016029.

The spelling of 73199609 in words is "seventy-three million, one hundred ninety-nine thousand, six hundred nine".