33990797 has 4 divisors (see below), whose sum is σ = 34308576. Its totient is φ = 33673020.

The previous prime is 33990793. The next prime is 33990799. The reversal of 33990797 is 79709933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79709933 = 53 ⋅1503961.

It is a cyclic number.

It is not a de Polignac number, because 33990797 - 2² = 33990793 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 (33990793) 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, 158729 + ... + 158942.

It is an arithmetic number, because the mean of its divisors is an integer number (8577144).

Almost surely, 2^33990797 is an apocalyptic number.

It is an amenable number.

33990797 is a deficient number, since it is larger than the sum of its proper divisors (317779).

33990797 is a wasteful number, since it uses less digits than its factorization.

33990797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317778.

The product of its (nonzero) digits is 321489, while the sum is 47.

The square root of 33990797 is about 5830.1626906974. The cubic root of 33990797 is about 323.9319479338.

The spelling of 33990797 in words is "thirty-three million, nine hundred ninety thousand, seven hundred ninety-seven".