422406397 has 16 divisors (see below), whose sum is σ = 492174592. Its totient is φ = 355052160.

The previous prime is 422406389. The next prime is 422406409. The reversal of 422406397 is 793604224.

It is a cyclic number.

It is not a de Polignac number, because 422406397 - 2³ = 422406389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422406337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90208 + ... + 94774.

It is an arithmetic number, because the mean of its divisors is an integer number (30760912).

Almost surely, 2^422406397 is an apocalyptic number.

It is an amenable number.

422406397 is a deficient number, since it is larger than the sum of its proper divisors (69768195).

422406397 is a wasteful number, since it uses less digits than its factorization.

422406397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 422406397 is about 20552.5277520795. The cubic root of 422406397 is about 750.3147698007.

The spelling of 422406397 in words is "four hundred twenty-two million, four hundred six thousand, three hundred ninety-seven".