3899741 has 4 divisors (see below), whose sum is σ = 3903900. Its totient is φ = 3895584.

The previous prime is 3899737. The next prime is 3899747. The reversal of 3899741 is 1479983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1479983 = 47 ⋅31489.

It can be written as a sum of positive squares in 2 ways, for example, as 2088025 + 1811716 = 1445^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 3899741 - 2² = 3899737 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 (3899747) 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, 65 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (975975).

Almost surely, 2^3899741 is an apocalyptic number.

It is an amenable number.

3899741 is a deficient number, since it is larger than the sum of its proper divisors (4159).

3899741 is a wasteful number, since it uses less digits than its factorization.

3899741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158.

The product of its digits is 54432, while the sum is 41.

The square root of 3899741 is about 1974.7761898504. The cubic root of 3899741 is about 157.4026071264.

The spelling of 3899741 in words is "three million, eight hundred ninety-nine thousand, seven hundred forty-one".