2139458 has 8 divisors (see below), whose sum is σ = 3263760. Its totient is φ = 1051540.

The previous prime is 2139427. The next prime is 2139461. The reversal of 2139458 is 8549312.

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

It is a d-powerful number, because it can be written as 2¹³ + 1 + 3¹¹ + 9³ + 4⁴ + 5⁹ + 8 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8948 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (407970).

2^2139458 is an apocalyptic number.

2139458 is a deficient number, since it is larger than the sum of its proper divisors (1124302).

2139458 is a wasteful number, since it uses less digits than its factorization.

2139458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18192.

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

The square root of 2139458 is about 1462.6886203153. The cubic root of 2139458 is about 128.8549940048.

The spelling of 2139458 in words is "two million, one hundred thirty-nine thousand, four hundred fifty-eight".