407947 has 2 divisors, whose sum is σ = 407948. Its totient is φ = 407946.

The previous prime is 407923. The next prime is 407959. The reversal of 407947 is 749704.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-407947 is a prime.

It is not a weakly prime, because it can be changed into another prime (407917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203973 + 203974.

It is an arithmetic number, because the mean of its divisors is an integer number (203974).

2⁴⁰⁷⁹⁴⁷ is an apocalyptic number.

407947 is a deficient number, since it is larger than the sum of its proper divisors (1).

407947 is an equidigital number, since it uses as much as digits as its factorization.

407947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 407947 is about 638.7072882002. The cubic root of 407947 is about 74.1653836976.

The spelling of 407947 in words is "four hundred seven thousand, nine hundred forty-seven".