90055946 has 4 divisors (see below), whose sum is σ = 135083922. Its totient is φ = 45027972.

The previous prime is 90055937. The next prime is 90055949. The reversal of 90055946 is 64955009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88642225 + 1413721 = 9415^2 + 1189^2 .

It is a super-3 number, since 3×90055946³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (90055949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22513985 + ... + 22513988.

Almost surely, 2^90055946 is an apocalyptic number.

90055946 is a deficient number, since it is larger than the sum of its proper divisors (45027976).

90055946 is a wasteful number, since it uses less digits than its factorization.

90055946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45027975.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 90055946 is about 9489.7811355162. The cubic root of 90055946 is about 448.2333134474.

The spelling of 90055946 in words is "ninety million, fifty-five thousand, nine hundred forty-six".