2139827 has 4 divisors (see below), whose sum is σ = 2163960. Its totient is φ = 2115696.

The previous prime is 2139817. The next prime is 2139829. The reversal of 2139827 is 7289312.

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 2139827 - 2⁴ = 2139811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2139793 and 2139802.

It is not an unprimeable number, because it can be changed into a prime (2139829) 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, 11933 + ... + 12110.

It is an arithmetic number, because the mean of its divisors is an integer number (540990).

2^2139827 is an apocalyptic number.

2139827 is a deficient number, since it is larger than the sum of its proper divisors (24133).

2139827 is an equidigital number, since it uses as much as digits as its factorization.

2139827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24132.

The product of its digits is 6048, while the sum is 32.

The square root of 2139827 is about 1462.8147524550. The cubic root of 2139827 is about 128.8624016067.

The spelling of 2139827 in words is "two million, one hundred thirty-nine thousand, eight hundred twenty-seven".