909749938 has 16 divisors (see below), whose sum is σ = 1383120000. Its totient is φ = 448720272.

The previous prime is 909749933. The next prime is 909749941. The reversal of 909749938 is 839947909.

It is not an unprimeable number, because it can be changed into a prime (909749933) 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 7 ways as a sum of consecutive naturals, for example, 266748 + ... + 270136.

It is an arithmetic number, because the mean of its divisors is an integer number (86445000).

Almost surely, 2^909749938 is an apocalyptic number.

909749938 is a deficient number, since it is larger than the sum of its proper divisors (473370062).

909749938 is a wasteful number, since it uses less digits than its factorization.

909749938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 909749938 is about 30162.0612359301. The cubic root of 909749938 is about 968.9633371683.

The spelling of 909749938 in words is "nine hundred nine million, seven hundred forty-nine thousand, nine hundred thirty-eight".