400855033 has 2 divisors, whose sum is σ = 400855034. Its totient is φ = 400855032.

The previous prime is 400855001. The next prime is 400855061. The reversal of 400855033 is 330558004.

It is an a-pointer prime, because the next prime (400855061) can be obtained adding 400855033 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340513209 + 60341824 = 18453^2 + 7768^2 .

It is a cyclic number.

It is not a de Polignac number, because 400855033 - 2⁵ = 400855001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400854992 and 400855010.

It is not a weakly prime, because it can be changed into another prime (400850033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200427516 + 200427517.

It is an arithmetic number, because the mean of its divisors is an integer number (200427517).

Almost surely, 2^400855033 is an apocalyptic number.

It is an amenable number.

400855033 is a deficient number, since it is larger than the sum of its proper divisors (1).

400855033 is an equidigital number, since it uses as much as digits as its factorization.

400855033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 400855033 is about 20021.3644140453. The cubic root of 400855033 is about 737.3309208492.

The spelling of 400855033 in words is "four hundred million, eight hundred fifty-five thousand, thirty-three".