90857944 has 8 divisors (see below), whose sum is σ = 170358660. Its totient is φ = 45428968.

The previous prime is 90857933. The next prime is 90857947. The reversal of 90857944 is 44975809.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 90857894 and 90857903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90857947) 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 as a sum of consecutive naturals, namely, 5678614 + ... + 5678629.

Almost surely, 2^90857944 is an apocalyptic number.

It is an amenable number.

90857944 is a deficient number, since it is larger than the sum of its proper divisors (79500716).

90857944 is a wasteful number, since it uses less digits than its factorization.

90857944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357249 (or 11357245 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 90857944 is about 9531.9433485518. The cubic root of 90857944 is about 449.5599715084.

The spelling of 90857944 in words is "ninety million, eight hundred fifty-seven thousand, nine hundred forty-four".