13840858 has 4 divisors (see below), whose sum is σ = 20761290. Its totient is φ = 6920428.

The previous prime is 13840847. The next prime is 13840861. The reversal of 13840858 is 85804831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13227769 + 613089 = 3637^2 + 783^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460213 + ... + 3460216.

Almost surely, 2^13840858 is an apocalyptic number.

13840858 is a deficient number, since it is larger than the sum of its proper divisors (6920432).

13840858 is an equidigital number, since it uses as much as digits as its factorization.

13840858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6920431.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 13840858 is about 3720.3303616749. The cubic root of 13840858 is about 240.0975182408.

The spelling of 13840858 in words is "thirteen million, eight hundred forty thousand, eight hundred fifty-eight".