73097989 has 4 divisors (see below), whose sum is σ = 74023360. Its totient is φ = 72172620.

The previous prime is 73097987. The next prime is 73097993. The reversal of 73097989 is 98979037.

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 a cyclic number.

It is not a de Polignac number, because 73097989 - 2¹ = 73097987 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 (73097987) 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, 462567 + ... + 462724.

It is an arithmetic number, because the mean of its divisors is an integer number (18505840).

Almost surely, 2^73097989 is an apocalyptic number.

73097989 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

73097989 is a deficient number, since it is larger than the sum of its proper divisors (925371).

73097989 is an equidigital number, since it uses as much as digits as its factorization.

73097989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925370.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 73097989 is about 8549.7361947606. The cubic root of 73097989 is about 418.1208356956.

The spelling of 73097989 in words is "seventy-three million, ninety-seven thousand, nine hundred eighty-nine".