93901921 has 2 divisors, whose sum is σ = 93901922. Its totient is φ = 93901920.

The previous prime is 93901919. The next prime is 93901937. The reversal of 93901921 is 12910939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 3651921 = 9500^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 93901921 - 2¹ = 93901919 is a prime.

It is a super-3 number, since 3×93901921³ (a number of 25 digits) contains 333 as substring.

Together with 93901919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (93905921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46950960 + 46950961.

It is an arithmetic number, because the mean of its divisors is an integer number (46950961).

Almost surely, 2^93901921 is an apocalyptic number.

It is an amenable number.

93901921 is a deficient number, since it is larger than the sum of its proper divisors (1).

93901921 is an equidigital number, since it uses as much as digits as its factorization.

93901921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 93901921 is about 9690.3003565421. The cubic root of 93901921 is about 454.5254013590.

It can be divided in two parts, 9390 and 1921, that added together give a palindrome (11311).

The spelling of 93901921 in words is "ninety-three million, nine hundred one thousand, nine hundred twenty-one".