909091010 has 8 divisors (see below), whose sum is σ = 1636363836. Its totient is φ = 363636400.

The previous prime is 909090977. The next prime is 909091013. The reversal of 909091010 is 10190909.

It can be written as a sum of positive squares in 2 ways, for example, as 902221369 + 6869641 = 30037^2 + 2621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (909091013) 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, 45454541 + ... + 45454560.

Almost surely, 2^909091010 is an apocalyptic number.

909091010 is a deficient number, since it is larger than the sum of its proper divisors (727272826).

909091010 is a wasteful number, since it uses less digits than its factorization.

909091010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90909108.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 909091010 is about 30151.1361311643. The cubic root of 909091010 is about 968.7293419944.

It can be divided in two parts, 90909 and 1010, that added together give a palindrome (91919).

The spelling of 909091010 in words is "nine hundred nine million, ninety-one thousand, ten".