400536373 has 2 divisors, whose sum is σ = 400536374. Its totient is φ = 400536372.

The previous prime is 400536361. The next prime is 400536379. The reversal of 400536373 is 373635004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252110884 + 148425489 = 15878^2 + 12183^2 .

It is a cyclic number.

It is not a de Polignac number, because 400536373 - 2⁵ = 400536341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400536379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200268186 + 200268187.

It is an arithmetic number, because the mean of its divisors is an integer number (200268187).

Almost surely, 2^400536373 is an apocalyptic number.

It is an amenable number.

400536373 is a deficient number, since it is larger than the sum of its proper divisors (1).

400536373 is an equidigital number, since it uses as much as digits as its factorization.

400536373 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 31.

The square root of 400536373 is about 20013.4048327615. The cubic root of 400536373 is about 737.1354884698.

The spelling of 400536373 in words is "four hundred million, five hundred thirty-six thousand, three hundred seventy-three".