73897789 has 4 divisors (see below), whose sum is σ = 84454624. Its totient is φ = 63340956.

The previous prime is 73897787. The next prime is 73897841. The reversal of 73897789 is 98779837.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 73897789 - 2¹ = 73897787 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 (73897787) 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, 5278407 + ... + 5278420.

It is an arithmetic number, because the mean of its divisors is an integer number (21113656).

Almost surely, 2^73897789 is an apocalyptic number.

It is an amenable number.

73897789 is a deficient number, since it is larger than the sum of its proper divisors (10556835).

73897789 is a wasteful number, since it uses less digits than its factorization.

73897789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556834.

The product of its digits is 5334336, while the sum is 58.

The square root of 73897789 is about 8596.3823204881. The cubic root of 73897789 is about 419.6402607464.

The spelling of 73897789 in words is "seventy-three million, eight hundred ninety-seven thousand, seven hundred eighty-nine".