73691489 has 4 divisors (see below), whose sum is σ = 73781424. Its totient is φ = 73601556.

The previous prime is 73691459. The next prime is 73691503. The reversal of 73691489 is 98419637.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98419637 = 31 ⋅3174827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73691489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73691459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43727 + ... + 45380.

It is an arithmetic number, because the mean of its divisors is an integer number (18445356).

Almost surely, 2^73691489 is an apocalyptic number.

It is an amenable number.

73691489 is a deficient number, since it is larger than the sum of its proper divisors (89935).

73691489 is an equidigital number, since it uses as much as digits as its factorization.

73691489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89934.

The product of its digits is 326592, while the sum is 47.

The square root of 73691489 is about 8584.3747005824. The cubic root of 73691489 is about 419.2493944216.

The spelling of 73691489 in words is "seventy-three million, six hundred ninety-one thousand, four hundred eighty-nine".