405329947 has 8 divisors (see below), whose sum is σ = 444015792. Its totient is φ = 366950400.

The previous prime is 405329921. The next prime is 405329971. The reversal of 405329947 is 749923504.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405329947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405329987) 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, 73798 + ... + 79099.

It is an arithmetic number, because the mean of its divisors is an integer number (55501974).

Almost surely, 2^405329947 is an apocalyptic number.

405329947 is a deficient number, since it is larger than the sum of its proper divisors (38685845).

405329947 is a wasteful number, since it uses less digits than its factorization.

405329947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153149.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 405329947 is about 20132.8077276867. The cubic root of 405329947 is about 740.0644861018.

The spelling of 405329947 in words is "four hundred five million, three hundred twenty-nine thousand, nine hundred forty-seven".