406219797 has 6 divisors (see below), whose sum is σ = 586761942. Its totient is φ = 270813192.

The previous prime is 406219789. The next prime is 406219799. The reversal of 406219797 is 797912604.

It can be written as a sum of positive squares in only one way, i.e., 396447921 + 9771876 = 19911^2 + 3126^2 .

It is not a de Polignac number, because 406219797 - 2³ = 406219789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406219799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22567758 + ... + 22567775.

It is an arithmetic number, because the mean of its divisors is an integer number (97793657).

Almost surely, 2^406219797 is an apocalyptic number.

It is an amenable number.

406219797 is a deficient number, since it is larger than the sum of its proper divisors (180542145).

406219797 is a wasteful number, since it uses less digits than its factorization.

406219797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45135539 (or 45135536 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 406219797 is about 20154.8951126023. The cubic root of 406219797 is about 740.6056625406.

The spelling of 406219797 in words is "four hundred six million, two hundred nineteen thousand, seven hundred ninety-seven".