403849247 has 2 divisors, whose sum is σ = 403849248. Its totient is φ = 403849246.

The previous prime is 403849217. The next prime is 403849261. The reversal of 403849247 is 742948304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 403849247 - 2¹² = 403845151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403849217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201924623 + 201924624.

It is an arithmetic number, because the mean of its divisors is an integer number (201924624).

Almost surely, 2^403849247 is an apocalyptic number.

403849247 is a deficient number, since it is larger than the sum of its proper divisors (1).

403849247 is an equidigital number, since it uses as much as digits as its factorization.

403849247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 403849247 is about 20096.0007712978. Note that the first 3 decimals coincide. The cubic root of 403849247 is about 739.1622165888.

The spelling of 403849247 in words is "four hundred three million, eight hundred forty-nine thousand, two hundred forty-seven".