3445981 has 8 divisors (see below), whose sum is σ = 4296384. Its totient is φ = 2685120.

The previous prime is 3445963. The next prime is 3445999. The reversal of 3445981 is 1895443.

It is an interprime number because it is at equal distance from previous prime (3445963) and next prime (3445999).

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

It is a cyclic number.

It is not a de Polignac number, because 3445981 - 2⁷ = 3445853 is a prime.

It is a super-2 number, since 2×3445981² = 23749570104722, which contains 22 as substring.

It is a Duffinian number.

3445981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3445931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22300 + ... + 22453.

It is an arithmetic number, because the mean of its divisors is an integer number (537048).

Almost surely, 2^3445981 is an apocalyptic number.

It is an amenable number.

3445981 is a deficient number, since it is larger than the sum of its proper divisors (850403).

3445981 is a wasteful number, since it uses less digits than its factorization.

3445981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44771.

The product of its digits is 17280, while the sum is 34.

The square root of 3445981 is about 1856.3353684073. The cubic root of 3445981 is about 151.0442833147.

The spelling of 3445981 in words is "three million, four hundred forty-five thousand, nine hundred eighty-one".