73909375 has 24 divisors (see below), whose sum is σ = 94025232. Its totient is φ = 58080000.

The previous prime is 73909351. The next prime is 73909379. The reversal of 73909375 is 57390937.

It is not a de Polignac number, because 73909375 - 2⁵ = 73909343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73909379) 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, 209199 + ... + 209551.

It is an arithmetic number, because the mean of its divisors is an integer number (3917718).

Almost surely, 2^73909375 is an apocalyptic number.

73909375 is a deficient number, since it is larger than the sum of its proper divisors (20115857).

73909375 is an frugal number, since it uses more digits than its factorization.

73909375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 43.

The square root of 73909375 is about 8597.0561822056. The cubic root of 73909375 is about 419.6621905771.

The spelling of 73909375 in words is "seventy-three million, nine hundred nine thousand, three hundred seventy-five".