3139217 has 4 divisors (see below), whose sum is σ = 3158640. Its totient is φ = 3119796.

The previous prime is 3139207. The next prime is 3139231. The reversal of 3139217 is 7129313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7129313 = 19 ⋅375227.

It is a cyclic number.

It is not a de Polignac number, because 3139217 - 2¹⁰ = 3138193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3139207) 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 3 ways as a sum of consecutive naturals, for example, 9467 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (789660).

Almost surely, 2^3139217 is an apocalyptic number.

It is an amenable number.

3139217 is a deficient number, since it is larger than the sum of its proper divisors (19423).

3139217 is a wasteful number, since it uses less digits than its factorization.

3139217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19422.

The product of its digits is 1134, while the sum is 26.

The square root of 3139217 is about 1771.7835646602. The cubic root of 3139217 is about 146.4222622590.

The spelling of 3139217 in words is "three million, one hundred thirty-nine thousand, two hundred seventeen".