33890739 has 4 divisors (see below), whose sum is σ = 45187656. Its totient is φ = 22593824.

The previous prime is 33890729. The next prime is 33890767. The reversal of 33890739 is 93709833.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33890739 - 2⁷ = 33890611 is a prime.

It is a super-2 number, since 2×33890739² = 2297164379932242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33890739.

It is not an unprimeable number, because it can be changed into a prime (33890729) 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, 5648454 + ... + 5648459.

It is an arithmetic number, because the mean of its divisors is an integer number (11296914).

Almost surely, 2^33890739 is an apocalyptic number.

33890739 is a deficient number, since it is larger than the sum of its proper divisors (11296917).

33890739 is a wasteful number, since it uses less digits than its factorization.

33890739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11296916.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 33890739 is about 5821.5753022700. The cubic root of 33890739 is about 323.6137849670.

The spelling of 33890739 in words is "thirty-three million, eight hundred ninety thousand, seven hundred thirty-nine".