901010109 has 4 divisors (see below), whose sum is σ = 1201346816. Its totient is φ = 600673404.

The previous prime is 901010107. The next prime is 901010129.

901010109 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 901010109 - 2¹ = 901010107 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901010107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150168349 + ... + 150168354.

It is an arithmetic number, because the mean of its divisors is an integer number (300336704).

Almost surely, 2^901010109 is an apocalyptic number.

It is an amenable number.

901010109 is a deficient number, since it is larger than the sum of its proper divisors (300336707).

901010109 is a wasteful number, since it uses less digits than its factorization.

901010109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300336706.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 901010109 is about 30016.8304289444. The cubic root of 901010109 is about 965.8504530831.

The spelling of 901010109 in words is "nine hundred one million, ten thousand, one hundred nine".