901883993 has 2 divisors, whose sum is σ = 901883994. Its totient is φ = 901883992.

The previous prime is 901883953. The next prime is 901884013. The reversal of 901883993 is 399388109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793661584 + 108222409 = 28172^2 + 10403^2 .

It is an emirp because it is prime and its reverse (399388109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 901883993 - 2⁸ = 901883737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (901883923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450941996 + 450941997.

It is an arithmetic number, because the mean of its divisors is an integer number (450941997).

Almost surely, 2^901883993 is an apocalyptic number.

It is an amenable number.

901883993 is a deficient number, since it is larger than the sum of its proper divisors (1).

901883993 is an equidigital number, since it uses as much as digits as its factorization.

901883993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 901883993 is about 30031.3834679656. The cubic root of 901883993 is about 966.1626095984.

The spelling of 901883993 in words is "nine hundred one million, eight hundred eighty-three thousand, nine hundred ninety-three".