3694729 has 4 divisors (see below), whose sum is σ = 3912084. Its totient is φ = 3477376.

The previous prime is 3694727. The next prime is 3694741. The reversal of 3694729 is 9274963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9274963 = 347 ⋅26729.

It can be written as a sum of positive squares in 2 ways, for example, as 1261129 + 2433600 = 1123^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3694729 - 2¹ = 3694727 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3694691 and 3694700.

It is not an unprimeable number, because it can be changed into a prime (3694723) 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, 108652 + ... + 108685.

It is an arithmetic number, because the mean of its divisors is an integer number (978021).

Almost surely, 2^3694729 is an apocalyptic number.

It is an amenable number.

3694729 is a deficient number, since it is larger than the sum of its proper divisors (217355).

3694729 is a wasteful number, since it uses less digits than its factorization.

3694729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217354.

The product of its digits is 81648, while the sum is 40.

The square root of 3694729 is about 1922.1677866409. The cubic root of 3694729 is about 154.5945560558.

The spelling of 3694729 in words is "three million, six hundred ninety-four thousand, seven hundred twenty-nine".