90491146 has 8 divisors (see below), whose sum is σ = 136982340. Its totient is φ = 44830368.

The previous prime is 90491143. The next prime is 90491147. The reversal of 90491146 is 64119409.

It can be written as a sum of positive squares in 2 ways, for example, as 72335025 + 18156121 = 8505^2 + 4261^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90491143) 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 3 ways as a sum of consecutive naturals, for example, 207331 + ... + 207766.

Almost surely, 2^90491146 is an apocalyptic number.

90491146 is a deficient number, since it is larger than the sum of its proper divisors (46491194).

90491146 is a wasteful number, since it uses less digits than its factorization.

90491146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415208.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 90491146 is about 9512.6834279293. The cubic root of 90491146 is about 448.9541903287.

The spelling of 90491146 in words is "ninety million, four hundred ninety-one thousand, one hundred forty-six".