73196989 has 4 divisors (see below), whose sum is σ = 75175324. Its totient is φ = 71218656.

The previous prime is 73196969. The next prime is 73196999. The reversal of 73196989 is 98969137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98969137 = 59 ⋅1677443.

It can be written as a sum of positive squares in 2 ways, for example, as 44756100 + 28440889 = 6690^2 + 5333^2 .

It is a cyclic number.

It is not a de Polignac number, because 73196989 - 2⁹ = 73196477 is a prime.

It is a super-2 number, since 2×73196989² = 10715598397332242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73196909) 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, 989112 + ... + 989185.

It is an arithmetic number, because the mean of its divisors is an integer number (18793831).

Almost surely, 2^73196989 is an apocalyptic number.

It is an amenable number.

73196989 is a deficient number, since it is larger than the sum of its proper divisors (1978335).

73196989 is a wasteful number, since it uses less digits than its factorization.

73196989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978334.

The product of its digits is 734832, while the sum is 52.

The square root of 73196989 is about 8555.5238881088. The cubic root of 73196989 is about 418.3095106970.

The spelling of 73196989 in words is "seventy-three million, one hundred ninety-six thousand, nine hundred eighty-nine".