4197906 has 20 divisors (see below), whose sum is σ = 9406782. Its totient is φ = 1399248.

The previous prime is 4197887. The next prime is 4197913. The reversal of 4197906 is 6097914.

It can be written as a sum of positive squares in only one way, i.e., 3404025 + 793881 = 1845^2 + 891^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12795 + ... + 13118.

Almost surely, 2^4197906 is an apocalyptic number.

4197906 is an abundant number, since it is smaller than the sum of its proper divisors (5208876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4197906 is a wasteful number, since it uses less digits than its factorization.

4197906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25927 (or 25918 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 4197906 is about 2048.8792058098. The cubic root of 4197906 is about 161.3160464975.

The spelling of 4197906 in words is "four million, one hundred ninety-seven thousand, nine hundred six".