33499749 has 4 divisors (see below), whose sum is σ = 44666336. Its totient is φ = 22333164.

The previous prime is 33499721. The next prime is 33499751. The reversal of 33499749 is 94799433.

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: 94799433 = 3 ⋅31599811.

It is not a de Polignac number, because 33499749 - 2⁷ = 33499621 is a prime.

It is a super-2 number, since 2×33499749² = 2244466366126002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33499698 and 33499707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33499759) 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, 5583289 + ... + 5583294.

It is an arithmetic number, because the mean of its divisors is an integer number (11166584).

Almost surely, 2^33499749 is an apocalyptic number.

It is an amenable number.

33499749 is a deficient number, since it is larger than the sum of its proper divisors (11166587).

33499749 is a wasteful number, since it uses less digits than its factorization.

33499749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166586.

The product of its digits is 734832, while the sum is 48.

The square root of 33499749 is about 5787.8967682570. The cubic root of 33499749 is about 322.3644812500.

The spelling of 33499749 in words is "thirty-three million, four hundred ninety-nine thousand, seven hundred forty-nine".