409215147 has 32 divisors (see below), whose sum is σ = 605283840. Its totient is φ = 243851520.

The previous prime is 409215139. The next prime is 409215203. The reversal of 409215147 is 741512904.

It is a happy number.

It is not a de Polignac number, because 409215147 - 2³ = 409215139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (409215847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 813298 + ... + 813800.

It is an arithmetic number, because the mean of its divisors is an integer number (18915120).

Almost surely, 2^409215147 is an apocalyptic number.

409215147 is a deficient number, since it is larger than the sum of its proper divisors (196068693).

409215147 is a wasteful number, since it uses less digits than its factorization.

409215147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 409215147 is about 20229.0668840656. The cubic root of 409215147 is about 742.4215455203.

The spelling of 409215147 in words is "four hundred nine million, two hundred fifteen thousand, one hundred forty-seven".