3690394 has 8 divisors (see below), whose sum is σ = 5861268. Its totient is φ = 1736640.

The previous prime is 3690371. The next prime is 3690397. The reversal of 3690394 is 4930963.

It can be written as a sum of positive squares in 2 ways, for example, as 3193369 + 497025 = 1787^2 + 705^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 108541 = 3690394 / (3 + 6 + 9 + 0 + 3 + 9 + 4).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3690397) 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, 54237 + ... + 54304.

Almost surely, 2^3690394 is an apocalyptic number.

3690394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3690394 is a deficient number, since it is larger than the sum of its proper divisors (2170874).

3690394 is a wasteful number, since it uses less digits than its factorization.

3690394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108560.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3690394 is about 1921.0398225961. The cubic root of 3690394 is about 154.5340708193.

The spelling of 3690394 in words is "three million, six hundred ninety thousand, three hundred ninety-four".