4209997 has 4 divisors (see below), whose sum is σ = 4592736. Its totient is φ = 3827260.

The previous prime is 4209991. The next prime is 4210013. The reversal of 4209997 is 7999024.

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.

It is a cyclic number.

It is not a de Polignac number, because 4209997 - 2⁷ = 4209869 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4209991) 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, 191353 + ... + 191374.

It is an arithmetic number, because the mean of its divisors is an integer number (1148184).

Almost surely, 2^4209997 is an apocalyptic number.

It is an amenable number.

4209997 is a deficient number, since it is larger than the sum of its proper divisors (382739).

4209997 is a wasteful number, since it uses less digits than its factorization.

4209997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382738.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 4209997 is about 2051.8277218129. The cubic root of 4209997 is about 161.4707746482.

The spelling of 4209997 in words is "four million, two hundred nine thousand, nine hundred ninety-seven".