3694421 has 4 divisors (see below), whose sum is σ = 3855072. Its totient is φ = 3533772.

The previous prime is 3694409. The next prime is 3694429. The reversal of 3694421 is 1244963.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1244963 = 631 ⋅1973.

It is a cyclic number.

It is not a de Polignac number, because 3694421 - 2⁶ = 3694357 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 (3694429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80291 + ... + 80336.

It is an arithmetic number, because the mean of its divisors is an integer number (963768).

Almost surely, 2^3694421 is an apocalyptic number.

It is an amenable number.

3694421 is a deficient number, since it is larger than the sum of its proper divisors (160651).

3694421 is a wasteful number, since it uses less digits than its factorization.

3694421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160650.

The product of its digits is 5184, while the sum is 29.

The square root of 3694421 is about 1922.0876670953. The cubic root of 3694421 is about 154.5902601659.

The spelling of 3694421 in words is "three million, six hundred ninety-four thousand, four hundred twenty-one".