939090 has 32 divisors (see below), whose sum is σ = 2353536. Its totient is φ = 239360.

The previous prime is 939089. The next prime is 939091. The reversal of 939090 is 90939.

It is an interprime number because it is at equal distance from previous prime (939089) and next prime (939091).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (939091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10 + ... + 1370.

It is an arithmetic number, because the mean of its divisors is an integer number (73548).

2⁹³⁹⁰⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 939090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176768).

939090 is an abundant number, since it is smaller than the sum of its proper divisors (1414446).

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

939090 is a wasteful number, since it uses less digits than its factorization.

939090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394.

The product of its (nonzero) digits is 2187, while the sum is 30.

The square root of 939090 is about 969.0665611814. The cubic root of 939090 is about 97.9269899080.

The spelling of 939090 in words is "nine hundred thirty-nine thousand, ninety".