919089938 has 54 divisors (see below), whose sum is σ = 1602338301. Its totient is φ = 395126784.

The previous prime is 919089931. The next prime is 919089949. The reversal of 919089938 is 839980919.

It can be written as a sum of positive squares in 14 ways, for example, as 19509889 + 899580049 = 4417^2 + 29993^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=21437.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919089931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9475106 + ... + 9475202.

Almost surely, 2^919089938 is an apocalyptic number.

919089938 is a deficient number, since it is larger than the sum of its proper divisors (683248363).

919089938 is a wasteful number, since it uses less digits than its factorization.

919089938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 56.

The square root of 919089938 is about 30316.4961365920. The cubic root of 919089938 is about 972.2680261665.

The spelling of 919089938 in words is "nine hundred nineteen million, eighty-nine thousand, nine hundred thirty-eight".