3440744581 has 4 divisors (see below), whose sum is σ = 3460633452. Its totient is φ = 3420855712.

The previous prime is 3440744533. The next prime is 3440744617. The reversal of 3440744581 is 1854470443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1854470443 = 7 ⋅264924349.

It can be written as a sum of positive squares in 2 ways, for example, as 3313844356 + 126900225 = 57566^2 + 11265^2 .

It is a cyclic number.

It is not a de Polignac number, because 3440744581 - 2⁷ = 3440744453 is a prime.

It is a super-2 number, since 2×3440744581² = 23677446543361731122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440744081) 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, 9944176 + ... + 9944521.

It is an arithmetic number, because the mean of its divisors is an integer number (865158363).

Almost surely, 2^3440744581 is an apocalyptic number.

It is an amenable number.

3440744581 is a deficient number, since it is larger than the sum of its proper divisors (19888871).

3440744581 is a wasteful number, since it uses less digits than its factorization.

3440744581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19888870.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 3440744581 is about 58657.8603513630. The cubic root of 3440744581 is about 1509.6773693410.

The spelling of 3440744581 in words is "three billion, four hundred forty million, seven hundred forty-four thousand, five hundred eighty-one".