90000101 has 4 divisors (see below), whose sum is σ = 90825900. Its totient is φ = 89174304.

The previous prime is 90000089. The next prime is 90000103. The reversal of 90000101 is 10100009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80550625 + 9449476 = 8975^2 + 3074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90000101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90000103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412736 + ... + 412953.

It is an arithmetic number, because the mean of its divisors is an integer number (22706475).

Almost surely, 2^90000101 is an apocalyptic number.

It is an amenable number.

90000101 is a deficient number, since it is larger than the sum of its proper divisors (825799).

90000101 is a wasteful number, since it uses less digits than its factorization.

90000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825798.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 90000101 is about 9486.8383036710. The cubic root of 90000101 is about 448.1406422934.

The spelling of 90000101 in words is "ninety million, one hundred one", and thus it is an aban number.