2709381 has 8 divisors (see below), whose sum is σ = 3802720. Its totient is φ = 1711152.

The previous prime is 2709361. The next prime is 2709391. The reversal of 2709381 is 1839072.

It is a happy number.

2709381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2709381 - 2⁷ = 2709253 is a prime.

It is a super-2 number, since 2×2709381² = 14681490806322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2709361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23710 + ... + 23823.

It is an arithmetic number, because the mean of its divisors is an integer number (475340).

2^2709381 is an apocalyptic number.

It is an amenable number.

2709381 is a deficient number, since it is larger than the sum of its proper divisors (1093339).

2709381 is a wasteful number, since it uses less digits than its factorization.

2709381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47555.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2709381 is about 1646.0197447175. The cubic root of 2709381 is about 139.4087480195.

The spelling of 2709381 in words is "two million, seven hundred nine thousand, three hundred eighty-one".