73397999 has 4 divisors (see below), whose sum is σ = 73976064. Its totient is φ = 72819936.

The previous prime is 73397983. The next prime is 73398023. The reversal of 73397999 is 99979337.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73397999 - 2⁴ = 73397983 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 (73397299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288842 + ... + 289095.

It is an arithmetic number, because the mean of its divisors is an integer number (18494016).

Almost surely, 2^73397999 is an apocalyptic number.

73397999 is a deficient number, since it is larger than the sum of its proper divisors (578065).

73397999 is a wasteful number, since it uses less digits than its factorization.

73397999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578064.

The product of its digits is 2893401, while the sum is 56.

The square root of 73397999 is about 8567.2632152864. The cubic root of 73397999 is about 418.6920744409.

The spelling of 73397999 in words is "seventy-three million, three hundred ninety-seven thousand, nine hundred ninety-nine".