33990005 has 8 divisors (see below), whose sum is σ = 46614912. Its totient is φ = 23307408.

The previous prime is 33989983. The next prime is 33990037. The reversal of 33990005 is 50009933.

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 33990005 - 2¹² = 33985909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33990005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485537 + ... + 485606.

It is an arithmetic number, because the mean of its divisors is an integer number (5826864).

Almost surely, 2^33990005 is an apocalyptic number.

33990005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33990005 is a deficient number, since it is larger than the sum of its proper divisors (12624907).

33990005 is an equidigital number, since it uses as much as digits as its factorization.

33990005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971155.

The product of its (nonzero) digits is 3645, while the sum is 29.

The square root of 33990005 is about 5830.0947676689. The cubic root of 33990005 is about 323.9294319970.

Adding to 33990005 its reverse (50009933), we get a palindrome (83999938).

The spelling of 33990005 in words is "thirty-three million, nine hundred ninety thousand, five".