400417453 has 2 divisors, whose sum is σ = 400417454. Its totient is φ = 400417452.

The previous prime is 400417447. The next prime is 400417469. The reversal of 400417453 is 354714004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248314564 + 152102889 = 15758^2 + 12333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400417453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400414453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200208726 + 200208727.

It is an arithmetic number, because the mean of its divisors is an integer number (200208727).

Almost surely, 2^400417453 is an apocalyptic number.

It is an amenable number.

400417453 is a deficient number, since it is larger than the sum of its proper divisors (1).

400417453 is an equidigital number, since it uses as much as digits as its factorization.

400417453 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 28.

The square root of 400417453 is about 20010.4336034980. The cubic root of 400417453 is about 737.0625289459.

The spelling of 400417453 in words is "four hundred million, four hundred seventeen thousand, four hundred fifty-three".