406725547 has 2 divisors, whose sum is σ = 406725548. Its totient is φ = 406725546.

The previous prime is 406725469. The next prime is 406725581. The reversal of 406725547 is 745527604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406725547 - 2¹⁹ = 406201259 is a prime.

It is equal to p_21675577 and since 406725547 and 21675577 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (406725047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203362773 + 203362774.

It is an arithmetic number, because the mean of its divisors is an integer number (203362774).

Almost surely, 2^406725547 is an apocalyptic number.

406725547 is a deficient number, since it is larger than the sum of its proper divisors (1).

406725547 is an equidigital number, since it uses as much as digits as its factorization.

406725547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 40.

The square root of 406725547 is about 20167.4377896648. The cubic root of 406725547 is about 740.9128902853.

The spelling of 406725547 in words is "four hundred six million, seven hundred twenty-five thousand, five hundred forty-seven".