3634391 has 4 divisors (see below), whose sum is σ = 3792432. Its totient is φ = 3476352.

The previous prime is 3634373. The next prime is 3634417. The reversal of 3634391 is 1934363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1934363 = 229 ⋅8447.

It is a cyclic number.

It is not a de Polignac number, because 3634391 - 2¹⁰ = 3633367 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 (3634291) 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, 78986 + ... + 79031.

It is an arithmetic number, because the mean of its divisors is an integer number (948108).

Almost surely, 2^3634391 is an apocalyptic number.

3634391 is a deficient number, since it is larger than the sum of its proper divisors (158041).

3634391 is a wasteful number, since it uses less digits than its factorization.

3634391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158040.

The product of its digits is 5832, while the sum is 29.

The square root of 3634391 is about 1906.4078787080. The cubic root of 3634391 is about 153.7483803562.

The spelling of 3634391 in words is "three million, six hundred thirty-four thousand, three hundred ninety-one".