201409197 has 16 divisors (see below), whose sum is σ = 293859840. Its totient is φ = 121690800.

The previous prime is 201409171. The next prime is 201409207. The reversal of 201409197 is 791904102.

It is not a de Polignac number, because 201409197 - 2⁶ = 201409133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201409127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704 + ... + 20142.

It is an arithmetic number, because the mean of its divisors is an integer number (18366240).

Almost surely, 2^201409197 is an apocalyptic number.

It is an amenable number.

201409197 is a deficient number, since it is larger than the sum of its proper divisors (92450643).

201409197 is a wasteful number, since it uses less digits than its factorization.

201409197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18784.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 201409197 is about 14191.8708069091. The cubic root of 201409197 is about 586.1738399859.

The spelling of 201409197 in words is "two hundred one million, four hundred nine thousand, one hundred ninety-seven".