77045089 has 4 divisors (see below), whose sum is σ = 84049200. Its totient is φ = 70040980.

The previous prime is 77045077. The next prime is 77045099. The reversal of 77045089 is 98054077.

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: 98054077 = 11 ⋅8914007.

It is a cyclic number.

It is not a de Polignac number, because 77045089 - 2⁹ = 77044577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77045099) 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, 3502039 + ... + 3502060.

It is an arithmetic number, because the mean of its divisors is an integer number (21012300).

Almost surely, 2^77045089 is an apocalyptic number.

It is an amenable number.

77045089 is a deficient number, since it is larger than the sum of its proper divisors (7004111).

77045089 is a wasteful number, since it uses less digits than its factorization.

77045089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004110.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 77045089 is about 8777.5331956080. The cubic root of 77045089 is about 425.5151105997.

The spelling of 77045089 in words is "seventy-seven million, forty-five thousand, eighty-nine".