406164397 has 2 divisors, whose sum is σ = 406164398. Its totient is φ = 406164396.

The previous prime is 406164389. The next prime is 406164419. The reversal of 406164397 is 793461604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383611396 + 22553001 = 19586^2 + 4749^2 .

It is a cyclic number.

It is not a de Polignac number, because 406164397 - 2³ = 406164389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406164097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203082198 + 203082199.

It is an arithmetic number, because the mean of its divisors is an integer number (203082199).

Almost surely, 2^406164397 is an apocalyptic number.

It is an amenable number.

406164397 is a deficient number, since it is larger than the sum of its proper divisors (1).

406164397 is an equidigital number, since it uses as much as digits as its factorization.

406164397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 406164397 is about 20153.5207097916. The cubic root of 406164397 is about 740.5719932320.

The spelling of 406164397 in words is "four hundred six million, one hundred sixty-four thousand, three hundred ninety-seven".