400412567 has 2 divisors, whose sum is σ = 400412568. Its totient is φ = 400412566.

The previous prime is 400412549. The next prime is 400412609. The reversal of 400412567 is 765214004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400412567 - 2¹² = 400408471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400412867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200206283 + 200206284.

It is an arithmetic number, because the mean of its divisors is an integer number (200206284).

Almost surely, 2^400412567 is an apocalyptic number.

400412567 is a deficient number, since it is larger than the sum of its proper divisors (1).

400412567 is an equidigital number, since it uses as much as digits as its factorization.

400412567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 400412567 is about 20010.3115168155. The cubic root of 400412567 is about 737.0595309895.

The spelling of 400412567 in words is "four hundred million, four hundred twelve thousand, five hundred sixty-seven".