406727197 has 4 divisors (see below), whose sum is σ = 406962556. Its totient is φ = 406491840.

The previous prime is 406727137. The next prime is 406727207. The reversal of 406727197 is 791727604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60543961 + 346183236 = 7781^2 + 18606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406727197 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 (406727137) 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, 115068 + ... + 118549.

It is an arithmetic number, because the mean of its divisors is an integer number (101740639).

Almost surely, 2^406727197 is an apocalyptic number.

It is an amenable number.

406727197 is a deficient number, since it is larger than the sum of its proper divisors (235359).

406727197 is a wasteful number, since it uses less digits than its factorization.

406727197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235358.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 406727197 is about 20167.4786971500. The cubic root of 406727197 is about 740.9138921932.

The spelling of 406727197 in words is "four hundred six million, seven hundred twenty-seven thousand, one hundred ninety-seven".