77298089 has 4 divisors (see below), whose sum is σ = 84325200. Its totient is φ = 70270980.

The previous prime is 77298073. The next prime is 77298119. The reversal of 77298089 is 98089277.

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 not a de Polignac number, because 77298089 - 2⁴ = 77298073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77298019) 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, 3513539 + ... + 3513560.

It is an arithmetic number, because the mean of its divisors is an integer number (21081300).

Almost surely, 2^77298089 is an apocalyptic number.

It is an amenable number.

77298089 is a deficient number, since it is larger than the sum of its proper divisors (7027111).

77298089 is a wasteful number, since it uses less digits than its factorization.

77298089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027110.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 77298089 is about 8791.9331776351. The cubic root of 77298089 is about 425.9803693188.

The spelling of 77298089 in words is "seventy-seven million, two hundred ninety-eight thousand, eighty-nine".