3445139 has 4 divisors (see below), whose sum is σ = 3470424. Its totient is φ = 3419856.

The previous prime is 3445121. The next prime is 3445153. The reversal of 3445139 is 9315443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315443 = 79 ⋅117917.

It is a cyclic number.

It is not a de Polignac number, because 3445139 - 2¹² = 3441043 is a prime.

It is a super-3 number, since 3×3445139³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3445109) 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, 12437 + ... + 12710.

It is an arithmetic number, because the mean of its divisors is an integer number (867606).

Almost surely, 2^3445139 is an apocalyptic number.

3445139 is a deficient number, since it is larger than the sum of its proper divisors (25285).

3445139 is a wasteful number, since it uses less digits than its factorization.

3445139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25284.

The product of its digits is 6480, while the sum is 29.

The square root of 3445139 is about 1856.1085636352. The cubic root of 3445139 is about 151.0319801276.

The spelling of 3445139 in words is "three million, four hundred forty-five thousand, one hundred thirty-nine".