901285391 has 2 divisors, whose sum is σ = 901285392. Its totient is φ = 901285390.

The previous prime is 901285369. The next prime is 901285393. The reversal of 901285391 is 193582109.

901285391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 901285391 - 2¹⁰ = 901284367 is a prime.

Together with 901285393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901285393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450642695 + 450642696.

It is an arithmetic number, because the mean of its divisors is an integer number (450642696).

Almost surely, 2^901285391 is an apocalyptic number.

901285391 is a deficient number, since it is larger than the sum of its proper divisors (1).

901285391 is an equidigital number, since it uses as much as digits as its factorization.

901285391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 901285391 is about 30021.4155395777. The cubic root of 901285391 is about 965.9488072038.

The spelling of 901285391 in words is "nine hundred one million, two hundred eighty-five thousand, three hundred ninety-one".