33939090 has 48 divisors (see below), whose sum is σ = 88545600. Its totient is φ = 9019296.

The previous prime is 33939067. The next prime is 33939091. The reversal of 33939090 is 9093933.

It is not an unprimeable number, because it can be changed into a prime (33939091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39081 + ... + 39939.

It is an arithmetic number, because the mean of its divisors is an integer number (1844700).

Almost surely, 2^33939090 is an apocalyptic number.

33939090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33939090 is an abundant number, since it is smaller than the sum of its proper divisors (54606510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33939090 is a wasteful number, since it uses less digits than its factorization.

33939090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 19683, while the sum is 36.

The square root of 33939090 is about 5825.7265641291. The cubic root of 33939090 is about 323.7676088473.

The spelling of 33939090 in words is "thirty-three million, nine hundred thirty-nine thousand, ninety".