6212139 has 8 divisors (see below), whose sum is σ = 8643072. Its totient is φ = 3961320.

The previous prime is 6212117. The next prime is 6212147. The reversal of 6212139 is 9312126.

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

It is not a de Polignac number, because 6212139 - 2¹⁶ = 6146603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6212159) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 44947 + ... + 45084.

It is an arithmetic number, because the mean of its divisors is an integer number (1080384).

Almost surely, 2^6212139 is an apocalyptic number.

6212139 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6212139 is a deficient number, since it is larger than the sum of its proper divisors (2430933).

6212139 is a wasteful number, since it uses less digits than its factorization.

6212139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90057.

The product of its digits is 648, while the sum is 24.

The square root of 6212139 is about 2492.4162974913. The cubic root of 6212139 is about 183.8288716894.

The spelling of 6212139 in words is "six million, two hundred twelve thousand, one hundred thirty-nine".