400606247 has 2 divisors, whose sum is σ = 400606248. Its totient is φ = 400606246.

The previous prime is 400606237. The next prime is 400606259. The reversal of 400606247 is 742606004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400606247 - 2⁴ = 400606231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400606237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200303123 + 200303124.

It is an arithmetic number, because the mean of its divisors is an integer number (200303124).

Almost surely, 2^400606247 is an apocalyptic number.

400606247 is a deficient number, since it is larger than the sum of its proper divisors (1).

400606247 is an equidigital number, since it uses as much as digits as its factorization.

400606247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 400606247 is about 20015.1504366068. The cubic root of 400606247 is about 737.1783506697.

The spelling of 400606247 in words is "four hundred million, six hundred six thousand, two hundred forty-seven".