407947049 has 2 divisors, whose sum is σ = 407947050. Its totient is φ = 407947048.

The previous prime is 407947039. The next prime is 407947051. The reversal of 407947049 is 940749704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360240400 + 47706649 = 18980^2 + 6907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-407947049 is a prime.

Together with 407947051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (407947019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203973524 + 203973525.

It is an arithmetic number, because the mean of its divisors is an integer number (203973525).

Almost surely, 2^407947049 is an apocalyptic number.

It is an amenable number.

407947049 is a deficient number, since it is larger than the sum of its proper divisors (1).

407947049 is an equidigital number, since it uses as much as digits as its factorization.

407947049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 407947049 is about 20197.6991016304. The cubic root of 407947049 is about 741.6538666702.

The spelling of 407947049 in words is "four hundred seven million, nine hundred forty-seven thousand, forty-nine".