405503995 has 16 divisors (see below), whose sum is σ = 524567232. Its totient is φ = 299145600.

The previous prime is 405503993. The next prime is 405504019. The reversal of 405503995 is 599305504.

It is a happy number.

It is not a de Polignac number, because 405503995 - 2¹ = 405503993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405503993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76945 + ... + 82045.

It is an arithmetic number, because the mean of its divisors is an integer number (32785452).

Almost surely, 2^405503995 is an apocalyptic number.

405503995 is a deficient number, since it is larger than the sum of its proper divisors (119063237).

405503995 is a wasteful number, since it uses less digits than its factorization.

405503995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 405503995 is about 20137.1297607181. The cubic root of 405503995 is about 740.1703984271.

The spelling of 405503995 in words is "four hundred five million, five hundred three thousand, nine hundred ninety-five".