406434397 has 8 divisors (see below), whose sum is σ = 419808512. Its totient is φ = 393076800.

The previous prime is 406434389. The next prime is 406434503. The reversal of 406434397 is 793434604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406434397 - 2³ = 406434389 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 (406431397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63958 + ... + 70024.

It is an arithmetic number, because the mean of its divisors is an integer number (52476064).

Almost surely, 2^406434397 is an apocalyptic number.

It is an amenable number.

406434397 is a deficient number, since it is larger than the sum of its proper divisors (13374115).

406434397 is a wasteful number, since it uses less digits than its factorization.

406434397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 406434397 is about 20160.2181783829. The cubic root of 406434397 is about 740.7360566417.

The spelling of 406434397 in words is "four hundred six million, four hundred thirty-four thousand, three hundred ninety-seven".