90855944 has 8 divisors (see below), whose sum is σ = 170354910. Its totient is φ = 45427968.

The previous prime is 90855943. The next prime is 90855949. The reversal of 90855944 is 44955809.

It can be written as a sum of positive squares in only one way, i.e., 74615044 + 16240900 = 8638^2 + 4030^2 .

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

It is a super-2 number, since 2×90855944² = 16509605120262272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90855895 and 90855904.

It is not an unprimeable number, because it can be changed into a prime (90855943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5678489 + ... + 5678504.

Almost surely, 2^90855944 is an apocalyptic number.

It is an amenable number.

90855944 is a deficient number, since it is larger than the sum of its proper divisors (79498966).

90855944 is a wasteful number, since it uses less digits than its factorization.

90855944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11356999 (or 11356995 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 90855944 is about 9531.8384375733. The cubic root of 90855944 is about 449.5566728552.

The spelling of 90855944 in words is "ninety million, eight hundred fifty-five thousand, nine hundred forty-four".