400698443 has 2 divisors, whose sum is σ = 400698444. Its totient is φ = 400698442.

The previous prime is 400698439. The next prime is 400698491. The reversal of 400698443 is 344896004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400698443 - 2² = 400698439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400698397 and 400698406.

It is not a weakly prime, because it can be changed into another prime (400698643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200349221 + 200349222.

It is an arithmetic number, because the mean of its divisors is an integer number (200349222).

Almost surely, 2^400698443 is an apocalyptic number.

400698443 is a deficient number, since it is larger than the sum of its proper divisors (1).

400698443 is an equidigital number, since it uses as much as digits as its factorization.

400698443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 400698443 is about 20017.4534594189. The cubic root of 400698443 is about 737.2348980339.

The spelling of 400698443 in words is "four hundred million, six hundred ninety-eight thousand, four hundred forty-three".