3689474 has 4 divisors (see below), whose sum is σ = 5534214. Its totient is φ = 1844736.

The previous prime is 3689473. The next prime is 3689479. The reversal of 3689474 is 4749863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4749863 = 991 ⋅4793.

It can be written as a sum of positive squares in only one way, i.e., 2699449 + 990025 = 1643^2 + 995^2 .

It is a super-2 number, since 2×3689474² = 27224436793352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3689473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922367 + ... + 922370.

Almost surely, 2^3689474 is an apocalyptic number.

3689474 is a deficient number, since it is larger than the sum of its proper divisors (1844740).

3689474 is a wasteful number, since it uses less digits than its factorization.

3689474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844739.

The product of its digits is 145152, while the sum is 41.

The square root of 3689474 is about 1920.8003540191. The cubic root of 3689474 is about 154.5212281832.

The spelling of 3689474 in words is "three million, six hundred eighty-nine thousand, four hundred seventy-four".