406404465 has 16 divisors (see below), whose sum is σ = 688497408. Its totient is φ = 203998976.

The previous prime is 406404421. The next prime is 406404517. The reversal of 406404465 is 564404604.

It is a cyclic number.

It is not a de Polignac number, because 406404465 - 2⁸ = 406404209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796617 + ... + 797126.

It is an arithmetic number, because the mean of its divisors is an integer number (43031088).

Almost surely, 2^406404465 is an apocalyptic number.

It is an amenable number.

406404465 is a deficient number, since it is larger than the sum of its proper divisors (282092943).

406404465 is a wasteful number, since it uses less digits than its factorization.

406404465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593768.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 406404465 is about 20159.4758116376. The cubic root of 406404465 is about 740.7178722753.

The spelling of 406404465 in words is "four hundred six million, four hundred four thousand, four hundred sixty-five".