77538089 has 4 divisors (see below), whose sum is σ = 77572224. Its totient is φ = 77503956.

The previous prime is 77538077. The next prime is 77538101. The reversal of 77538089 is 98083577.

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 an interprime number because it is at equal distance from previous prime (77538077) and next prime (77538101).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77538089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77538289) 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, 13397 + ... + 18290.

It is an arithmetic number, because the mean of its divisors is an integer number (19393056).

Almost surely, 2^77538089 is an apocalyptic number.

It is an amenable number.

77538089 is a deficient number, since it is larger than the sum of its proper divisors (34135).

77538089 is a wasteful number, since it uses less digits than its factorization.

77538089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34134.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 77538089 is about 8805.5714749243. The cubic root of 77538089 is about 426.4207840959.

The spelling of 77538089 in words is "seventy-seven million, five hundred thirty-eight thousand, eighty-nine".