77336489 has 4 divisors (see below), whose sum is σ = 79135056. Its totient is φ = 75537924.

The previous prime is 77336477. The next prime is 77336507. The reversal of 77336489 is 98463377.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77336489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77336429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899219 + ... + 899304.

It is an arithmetic number, because the mean of its divisors is an integer number (19783764).

Almost surely, 2^77336489 is an apocalyptic number.

It is an amenable number.

77336489 is a deficient number, since it is larger than the sum of its proper divisors (1798567).

77336489 is a wasteful number, since it uses less digits than its factorization.

77336489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798566.

The product of its digits is 762048, while the sum is 47.

The square root of 77336489 is about 8794.1167265394. The cubic root of 77336489 is about 426.0508968848.

The spelling of 77336489 in words is "seventy-seven million, three hundred thirty-six thousand, four hundred eighty-nine".