405119947 has 4 divisors (see below), whose sum is σ = 405237960. Its totient is φ = 405001936.

The previous prime is 405119941. The next prime is 405119951. The reversal of 405119947 is 749911504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405119947 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405119941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53698 + ... + 60775.

It is an arithmetic number, because the mean of its divisors is an integer number (101309490).

Almost surely, 2^405119947 is an apocalyptic number.

405119947 is a deficient number, since it is larger than the sum of its proper divisors (118013).

405119947 is a wasteful number, since it uses less digits than its factorization.

405119947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118012.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 405119947 is about 20127.5916840540. The cubic root of 405119947 is about 739.9366557661.

The spelling of 405119947 in words is "four hundred five million, one hundred nineteen thousand, nine hundred forty-seven".