404520947 has 2 divisors, whose sum is σ = 404520948. Its totient is φ = 404520946.

The previous prime is 404520937. The next prime is 404521003. The reversal of 404520947 is 749025404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404520947 - 2¹⁰ = 404519923 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (404520937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202260473 + 202260474.

It is an arithmetic number, because the mean of its divisors is an integer number (202260474).

Almost surely, 2^404520947 is an apocalyptic number.

404520947 is a deficient number, since it is larger than the sum of its proper divisors (1).

404520947 is an equidigital number, since it uses as much as digits as its factorization.

404520947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 404520947 is about 20112.7061083286. The cubic root of 404520947 is about 739.5717920713.

The spelling of 404520947 in words is "four hundred four million, five hundred twenty thousand, nine hundred forty-seven".