3909743 has 4 divisors (see below), whose sum is σ = 3926208. Its totient is φ = 3893280.

The previous prime is 3909739. The next prime is 3909749. The reversal of 3909743 is 3479093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3479093 = 971 ⋅3583.

It is a cyclic number.

It is not a de Polignac number, because 3909743 - 2² = 3909739 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 (3909749) 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, 7871 + ... + 8352.

It is an arithmetic number, because the mean of its divisors is an integer number (981552).

Almost surely, 2^3909743 is an apocalyptic number.

3909743 is a deficient number, since it is larger than the sum of its proper divisors (16465).

3909743 is a wasteful number, since it uses less digits than its factorization.

3909743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16464.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 3909743 is about 1977.3070070174. The cubic root of 3909743 is about 157.5370602300.

The spelling of 3909743 in words is "three million, nine hundred nine thousand, seven hundred forty-three".