90839954 has 8 divisors (see below), whose sum is σ = 136394940. Its totient is φ = 45374976.

The previous prime is 90839953. The next prime is 90840017. The reversal of 90839954 is 45993809.

It can be written as a sum of positive squares in 2 ways, for example, as 77915929 + 12924025 = 8827^2 + 3595^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90839899 and 90839908.

It is not an unprimeable number, because it can be changed into a prime (90839953) 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 3 ways as a sum of consecutive naturals, for example, 19919 + ... + 24050.

Almost surely, 2^90839954 is an apocalyptic number.

90839954 is a deficient number, since it is larger than the sum of its proper divisors (45554986).

90839954 is a wasteful number, since it uses less digits than its factorization.

90839954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45004.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 90839954 is about 9530.9996327772. Note that the first 3 decimals coincide. The cubic root of 90839954 is about 449.5302983821.

The spelling of 90839954 in words is "ninety million, eight hundred thirty-nine thousand, nine hundred fifty-four".