90944090 has 8 divisors (see below), whose sum is σ = 163699380. Its totient is φ = 36377632.

The previous prime is 90944071. The next prime is 90944141. The reversal of 90944090 is 9044909.

It can be written as a sum of positive squares in 2 ways, for example, as 89889361 + 1054729 = 9481^2 + 1027^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90944090.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4547195 + ... + 4547214.

Almost surely, 2^90944090 is an apocalyptic number.

90944090 is a deficient number, since it is larger than the sum of its proper divisors (72755290).

90944090 is a wasteful number, since it uses less digits than its factorization.

90944090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094416.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 90944090 is about 9536.4610836515. The cubic root of 90944090 is about 449.7020084739.

Adding to 90944090 its reverse (9044909), we get a palindrome (99988999).

The spelling of 90944090 in words is "ninety million, nine hundred forty-four thousand, ninety".