77089321 has 4 divisors (see below), whose sum is σ = 78018192. Its totient is φ = 76160452.

The previous prime is 77089303. The next prime is 77089351. The reversal of 77089321 is 12398077.

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: 12398077 = 179 ⋅69263.

It is a cyclic number.

It is not a de Polignac number, because 77089321 - 2¹¹ = 77087273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77089301) 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, 464311 + ... + 464476.

It is an arithmetic number, because the mean of its divisors is an integer number (19504548).

Almost surely, 2^77089321 is an apocalyptic number.

It is an amenable number.

77089321 is a deficient number, since it is larger than the sum of its proper divisors (928871).

77089321 is an equidigital number, since it uses as much as digits as its factorization.

77089321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928870.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 77089321 is about 8780.0524485905. The cubic root of 77089321 is about 425.5965251927.

The spelling of 77089321 in words is "seventy-seven million, eighty-nine thousand, three hundred twenty-one".