901000901 has 16 divisors (see below), whose sum is σ = 981723888. Its totient is φ = 823680000.

The previous prime is 901000897. The next prime is 901000921. The reversal of 901000901 is 109000109.

It can be written as a sum of positive squares in 8 ways, for example, as 506025025 + 394975876 = 22495^2 + 19874^2 .

It is a cyclic number.

It is not a de Polignac number, because 901000901 - 2² = 901000897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901000921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86051 + ... + 95951.

It is an arithmetic number, because the mean of its divisors is an integer number (61357743).

Almost surely, 2^901000901 is an apocalyptic number.

It is an amenable number.

901000901 is a deficient number, since it is larger than the sum of its proper divisors (80722987).

901000901 is a wasteful number, since it uses less digits than its factorization.

901000901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 901000901 is about 30016.6770479345. The cubic root of 901000901 is about 965.8471628569.

The spelling of 901000901 in words is "nine hundred one million, nine hundred one", and thus it is an aban number.