90384646 has 8 divisors (see below), whose sum is σ = 147902184. Its totient is φ = 41083920.

The previous prime is 90384617. The next prime is 90384647. The reversal of 90384646 is 64648309.

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

It is a junction number, because it is equal to n+sod(n) for n = 90384599 and 90384608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90384647) 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, 2054175 + ... + 2054218.

It is an arithmetic number, because the mean of its divisors is an integer number (18487773).

Almost surely, 2^90384646 is an apocalyptic number.

90384646 is a deficient number, since it is larger than the sum of its proper divisors (57517538).

90384646 is a wasteful number, since it uses less digits than its factorization.

90384646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108406.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 90384646 is about 9507.0839903727. The cubic root of 90384646 is about 448.7779948550. Note that the first 3 decimals are identical.

The spelling of 90384646 in words is "ninety million, three hundred eighty-four thousand, six hundred forty-six".