400951673 has 2 divisors, whose sum is σ = 400951674. Its totient is φ = 400951672.

The previous prime is 400951637. The next prime is 400951693. The reversal of 400951673 is 376159004.

Together with previous prime (400951637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209323024 + 191628649 = 14468^2 + 13843^2 .

It is a cyclic number.

It is not a de Polignac number, because 400951673 - 2⁸ = 400951417 is a prime.

It is not a weakly prime, because it can be changed into another prime (400951633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200475836 + 200475837.

It is an arithmetic number, because the mean of its divisors is an integer number (200475837).

Almost surely, 2^400951673 is an apocalyptic number.

It is an amenable number.

400951673 is a deficient number, since it is larger than the sum of its proper divisors (1).

400951673 is an equidigital number, since it uses as much as digits as its factorization.

400951673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 400951673 is about 20023.7776905358. Note that the first 3 decimals coincide. The cubic root of 400951673 is about 737.3901691467.

The spelling of 400951673 in words is "four hundred million, nine hundred fifty-one thousand, six hundred seventy-three".