400726471 has 2 divisors, whose sum is σ = 400726472. Its totient is φ = 400726470.

The previous prime is 400726463. The next prime is 400726483. The reversal of 400726471 is 174627004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400726471 - 2³ = 400726463 is a prime.

It is a super-3 number, since 3×400726471³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400729471) 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, 200363235 + 200363236.

It is an arithmetic number, because the mean of its divisors is an integer number (200363236).

Almost surely, 2^400726471 is an apocalyptic number.

400726471 is a deficient number, since it is larger than the sum of its proper divisors (1).

400726471 is an equidigital number, since it uses as much as digits as its factorization.

400726471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 400726471 is about 20018.1535362281. The cubic root of 400726471 is about 737.2520869685.

The spelling of 400726471 in words is "four hundred million, seven hundred twenty-six thousand, four hundred seventy-one".