3139229 has 4 divisors (see below), whose sum is σ = 3148476. Its totient is φ = 3129984.

The previous prime is 3139207. The next prime is 3139231. The reversal of 3139229 is 9229313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9229313 = 419 ⋅22027.

It can be written as a sum of positive squares in 2 ways, for example, as 813604 + 2325625 = 902^2 + 1525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3139229 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 (3139259) 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, 4094 + ... + 4799.

It is an arithmetic number, because the mean of its divisors is an integer number (787119).

Almost surely, 2^3139229 is an apocalyptic number.

It is an amenable number.

3139229 is a deficient number, since it is larger than the sum of its proper divisors (9247).

3139229 is an equidigital number, since it uses as much as digits as its factorization.

3139229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246.

The product of its digits is 2916, while the sum is 29.

The square root of 3139229 is about 1771.7869510751. The cubic root of 3139229 is about 146.4224488304.

Subtracting from 3139229 its product of digits (2916), we obtain a palindrome (3136313).

The spelling of 3139229 in words is "three million, one hundred thirty-nine thousand, two hundred twenty-nine".