73409416 has 8 divisors (see below), whose sum is σ = 137642670. Its totient is φ = 36704704.

The previous prime is 73409389. The next prime is 73409419. The reversal of 73409416 is 61490437.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73102500 + 306916 = 8550^2 + 554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×73409416³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (73409419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4588081 + ... + 4588096.

Almost surely, 2^73409416 is an apocalyptic number.

It is an amenable number.

73409416 is a deficient number, since it is larger than the sum of its proper divisors (64233254).

73409416 is a wasteful number, since it uses less digits than its factorization.

73409416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176183 (or 9176179 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 73409416 is about 8567.9295048454. The cubic root of 73409416 is about 418.7137823878.

The spelling of 73409416 in words is "seventy-three million, four hundred nine thousand, four hundred sixteen".