2139485 has 8 divisors (see below), whose sum is σ = 2575800. Its totient is φ = 1705984.

The previous prime is 2139481. The next prime is 2139493. The reversal of 2139485 is 5849312.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 1907161 = 482^2 + 1381^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2139485 - 2² = 2139481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (321975).

2^2139485 is an apocalyptic number.

It is an amenable number.

2139485 is a deficient number, since it is larger than the sum of its proper divisors (436315).

2139485 is an equidigital number, since it uses as much as digits as its factorization.

2139485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407.

The product of its digits is 8640, while the sum is 32.

The square root of 2139485 is about 1462.6978498651. The cubic root of 2139485 is about 128.8555360533.

The spelling of 2139485 in words is "two million, one hundred thirty-nine thousand, four hundred eighty-five".