93920921289 has 24 divisors (see below), whose sum is σ = 146193811400. Its totient is φ = 57760065792.

The previous prime is 93920921261. The next prime is 93920921321. The reversal of 93920921289 is 98212902939.

It can be written as a sum of positive squares in 4 ways, for example, as 3704791689 + 90216129600 = 60867^2 + 300360^2 .

It is not a de Polignac number, because 93920921289 - 2⁸ = 93920921033 is a prime.

It is a super-2 number, since 2×93920921289² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (93920921219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77884 + ... + 440349.

Almost surely, 2^93920921289 is an apocalyptic number.

It is an amenable number.

93920921289 is a deficient number, since it is larger than the sum of its proper divisors (52272890111).

93920921289 is a wasteful number, since it uses less digits than its factorization.

93920921289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519801 (or 519798 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 93920921289 in words is "ninety-three billion, nine hundred twenty million, nine hundred twenty-one thousand, two hundred eighty-nine".