73409889 has 16 divisors (see below), whose sum is σ = 114147200. Its totient is φ = 41947920.

The previous prime is 73409879. The next prime is 73409923. The reversal of 73409889 is 98890437.

It is not a de Polignac number, because 73409889 - 2⁴ = 73409873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73409879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34642 + ... + 36699.

It is an arithmetic number, because the mean of its divisors is an integer number (7134200).

Almost surely, 2^73409889 is an apocalyptic number.

It is an amenable number.

73409889 is a deficient number, since it is larger than the sum of its proper divisors (40737311).

73409889 is an equidigital number, since it uses as much as digits as its factorization.

73409889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71365 (or 71351 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 73409889 is about 8567.9571077358. The cubic root of 73409889 is about 418.7146816875.

The spelling of 73409889 in words is "seventy-three million, four hundred nine thousand, eight hundred eighty-nine".