90859799 has 8 divisors (see below), whose sum is σ = 91972368. Its totient is φ = 89752320.

The previous prime is 90859793. The next prime is 90859801. The reversal of 90859799 is 99795809.

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

It is a cyclic number.

It is not a de Polignac number, because 90859799 - 2¹² = 90855703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90859793) 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, 44039 + ... + 46055.

It is an arithmetic number, because the mean of its divisors is an integer number (11496546).

Almost surely, 2^90859799 is an apocalyptic number.

90859799 is a deficient number, since it is larger than the sum of its proper divisors (1112569).

90859799 is a wasteful number, since it uses less digits than its factorization.

90859799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 90859799 is about 9532.0406524521. The cubic root of 90859799 is about 449.5630309660.

The spelling of 90859799 in words is "ninety million, eight hundred fifty-nine thousand, seven hundred ninety-nine".