90446081 has 8 divisors (see below), whose sum is σ = 98970528. Its totient is φ = 81972000.

The previous prime is 90446077. The next prime is 90446089. The reversal of 90446081 is 18064409.

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

It is not a de Polignac number, because 90446081 - 2² = 90446077 is a prime.

It is a super-2 number, since 2×90446081² = 16360987136517122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90446089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8780 + ... + 16061.

It is an arithmetic number, because the mean of its divisors is an integer number (12371316).

Almost surely, 2^90446081 is an apocalyptic number.

It is an amenable number.

90446081 is a deficient number, since it is larger than the sum of its proper divisors (8524447).

90446081 is a wasteful number, since it uses less digits than its factorization.

90446081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25183.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 90446081 is about 9510.3144532660. The cubic root of 90446081 is about 448.8796508812.

The spelling of 90446081 in words is "ninety million, four hundred forty-six thousand, eighty-one".