93639321 has 14 divisors (see below), whose sum is σ = 140395850. Its totient is φ = 62425728.

The previous prime is 93639307. The next prime is 93639379. The reversal of 93639321 is 12393639.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 80353296 + 13286025 = 8964^2 + 3645^2 .

It is not a de Polignac number, because 93639321 - 2¹⁵ = 93606553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93632321) 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 13 ways as a sum of consecutive naturals, for example, 63496 + ... + 64953.

It is an arithmetic number, because the mean of its divisors is an integer number (10028275).

Almost surely, 2^93639321 is an apocalyptic number.

It is an amenable number.

93639321 is a deficient number, since it is larger than the sum of its proper divisors (46756529).

93639321 is an equidigital number, since it uses as much as digits as its factorization.

93639321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128467 (or 128452 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 93639321 is about 9676.7412386609. The cubic root of 93639321 is about 454.1013070643.

The spelling of 93639321 in words is "ninety-three million, six hundred thirty-nine thousand, three hundred twenty-one".