3901749 has 4 divisors (see below), whose sum is σ = 5202336. Its totient is φ = 2601164.

The previous prime is 3901741. The next prime is 3901757. The reversal of 3901749 is 9471093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3901741) and next prime (3901757).

It is a cyclic number.

It is not a de Polignac number, because 3901749 - 2³ = 3901741 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3901741) 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, 650289 + ... + 650294.

It is an arithmetic number, because the mean of its divisors is an integer number (1300584).

Almost surely, 2^3901749 is an apocalyptic number.

It is an amenable number.

3901749 is a deficient number, since it is larger than the sum of its proper divisors (1300587).

3901749 is a wasteful number, since it uses less digits than its factorization.

3901749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300586.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 3901749 is about 1975.2845364656. The cubic root of 3901749 is about 157.4296183392.

The spelling of 3901749 in words is "three million, nine hundred one thousand, seven hundred forty-nine".