400860071 has 2 divisors, whose sum is σ = 400860072. Its totient is φ = 400860070.

The previous prime is 400860059. The next prime is 400860073. The reversal of 400860071 is 170068004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400860071 - 2⁶ = 400860007 is a prime.

Together with 400860073, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400860071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400860073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200430035 + 200430036.

It is an arithmetic number, because the mean of its divisors is an integer number (200430036).

Almost surely, 2^400860071 is an apocalyptic number.

400860071 is a deficient number, since it is larger than the sum of its proper divisors (1).

400860071 is an equidigital number, since it uses as much as digits as its factorization.

400860071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 400860071 is about 20021.4902292512. The cubic root of 400860071 is about 737.3340097943.

The spelling of 400860071 in words is "four hundred million, eight hundred sixty thousand, seventy-one".