90509446 has 8 divisors (see below), whose sum is σ = 135822384. Its totient is φ = 45235320.

The previous prime is 90509443. The next prime is 90509449. The reversal of 90509446 is 64490509.

It is an interprime number because it is at equal distance from previous prime (90509443) and next prime (90509449).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90509443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2925 + ... + 13768.

It is an arithmetic number, because the mean of its divisors is an integer number (16977798).

Almost surely, 2^90509446 is an apocalyptic number.

90509446 is a deficient number, since it is larger than the sum of its proper divisors (45312938).

90509446 is a wasteful number, since it uses less digits than its factorization.

90509446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19406.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 90509446 is about 9513.6452530037. The cubic root of 90509446 is about 448.9844522504.

It can be divided in two parts, 9050 and 9446, that added together give a square (18496 = 136²).

The spelling of 90509446 in words is "ninety million, five hundred nine thousand, four hundred forty-six".