400723373 has 2 divisors, whose sum is σ = 400723374. Its totient is φ = 400723372.

The previous prime is 400723343. The next prime is 400723399. The reversal of 400723373 is 373327004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356341129 + 44382244 = 18877^2 + 6662^2 .

It is a cyclic number.

It is not a de Polignac number, because 400723373 - 2⁸ = 400723117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400723343) 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, 200361686 + 200361687.

It is an arithmetic number, because the mean of its divisors is an integer number (200361687).

Almost surely, 2^400723373 is an apocalyptic number.

It is an amenable number.

400723373 is a deficient number, since it is larger than the sum of its proper divisors (1).

400723373 is an equidigital number, since it uses as much as digits as its factorization.

400723373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 29.

The square root of 400723373 is about 20018.0761563143. The cubic root of 400723373 is about 737.2501870750.

The spelling of 400723373 in words is "four hundred million, seven hundred twenty-three thousand, three hundred seventy-three".