10212439 has 4 divisors (see below), whose sum is σ = 10275256. Its totient is φ = 10149624.

The previous prime is 10212431. The next prime is 10212463. The reversal of 10212439 is 93421201.

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 10212439 - 2³ = 10212431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212431) 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, 31164 + ... + 31489.

It is an arithmetic number, because the mean of its divisors is an integer number (2568814).

Almost surely, 2^10212439 is an apocalyptic number.

10212439 is a deficient number, since it is larger than the sum of its proper divisors (62817).

10212439 is an equidigital number, since it uses as much as digits as its factorization.

10212439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62816.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 10212439 is about 3195.6906921666. The cubic root of 10212439 is about 216.9584111936.

The spelling of 10212439 in words is "ten million, two hundred twelve thousand, four hundred thirty-nine".