90449943 has 8 divisors (see below), whose sum is σ = 120811248. Its totient is φ = 60194304.

The previous prime is 90449939. The next prime is 90449969. The reversal of 90449943 is 34994409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90449943 - 2² = 90449939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90449895 and 90449904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90449903) 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 in 7 ways as a sum of consecutive naturals, for example, 24396 + ... + 27857.

It is an arithmetic number, because the mean of its divisors is an integer number (15101406).

Almost surely, 2^90449943 is an apocalyptic number.

90449943 is a deficient number, since it is larger than the sum of its proper divisors (30361305).

90449943 is a wasteful number, since it uses less digits than its factorization.

90449943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52833.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 90449943 is about 9510.5174938065. The cubic root of 90449943 is about 448.8860397651.

The spelling of 90449943 in words is "ninety million, four hundred forty-nine thousand, nine hundred forty-three".