400573973 has 2 divisors, whose sum is σ = 400573974. Its totient is φ = 400573972.

The previous prime is 400573969. The next prime is 400573993. The reversal of 400573973 is 379375004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381928849 + 18645124 = 19543^2 + 4318^2 .

It is a cyclic number.

It is not a de Polignac number, because 400573973 - 2² = 400573969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400573933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200286986 + 200286987.

It is an arithmetic number, because the mean of its divisors is an integer number (200286987).

Almost surely, 2^400573973 is an apocalyptic number.

It is an amenable number.

400573973 is a deficient number, since it is larger than the sum of its proper divisors (1).

400573973 is an equidigital number, since it uses as much as digits as its factorization.

400573973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 400573973 is about 20014.3441811117. The cubic root of 400573973 is about 737.1585537301.

The spelling of 400573973 in words is "four hundred million, five hundred seventy-three thousand, nine hundred seventy-three".