900197 has 4 divisors (see below), whose sum is σ = 939360. Its totient is φ = 861036.

The previous prime is 900187. The next prime is 900217. The reversal of 900197 is 791009.

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 900197 - 2¹² = 896101 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 (900157) 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, 19547 + ... + 19592.

It is an arithmetic number, because the mean of its divisors is an integer number (234840).

2⁹⁰⁰¹⁹⁷ is an apocalyptic number.

It is an amenable number.

900197 is a deficient number, since it is larger than the sum of its proper divisors (39163).

900197 is a wasteful number, since it uses less digits than its factorization.

900197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39162.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 900197 is about 948.7871204859. The cubic root of 900197 is about 96.5559824433. Note that the first 3 decimals are identical.

The spelling of 900197 in words is "nine hundred thousand, one hundred ninety-seven".