909820149 has 32 divisors (see below), whose sum is σ = 1469122560. Its totient is φ = 489240000.

The previous prime is 909820129. The next prime is 909820157. The reversal of 909820149 is 941028909.

It is not a de Polignac number, because 909820149 - 2⁹ = 909819637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 909820149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909820129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52699 + ... + 67799.

It is an arithmetic number, because the mean of its divisors is an integer number (45910080).

Almost surely, 2^909820149 is an apocalyptic number.

It is an amenable number.

909820149 is a deficient number, since it is larger than the sum of its proper divisors (559302411).

909820149 is a wasteful number, since it uses less digits than its factorization.

909820149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15281.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 909820149 is about 30163.2251093944. The cubic root of 909820149 is about 968.9882634812.

The spelling of 909820149 in words is "nine hundred nine million, eight hundred twenty thousand, one hundred forty-nine".