3699749 has 4 divisors (see below), whose sum is σ = 3710700. Its totient is φ = 3688800.

The previous prime is 3699743. The next prime is 3699767. The reversal of 3699749 is 9479963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9479963 = 397 ⋅23879.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 748225 = 1718^2 + 865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3699749 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 (3699743) 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, 4952 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (927675).

Almost surely, 2^3699749 is an apocalyptic number.

It is an amenable number.

3699749 is a deficient number, since it is larger than the sum of its proper divisors (10951).

3699749 is a wasteful number, since it uses less digits than its factorization.

3699749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10950.

The product of its digits is 367416, while the sum is 47.

The square root of 3699749 is about 1923.4731607174. The cubic root of 3699749 is about 154.6645398497.

Subtracting from 3699749 its product of digits (367416), we obtain a palindrome (3332333).

The spelling of 3699749 in words is "three million, six hundred ninety-nine thousand, seven hundred forty-nine".