400360447 has 2 divisors, whose sum is σ = 400360448. Its totient is φ = 400360446.

The previous prime is 400360417. The next prime is 400360453. The reversal of 400360447 is 744063004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400360447 - 2¹⁹ = 399836159 is a prime.

It is a super-3 number, since 3×400360447³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400360417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200180223 + 200180224.

It is an arithmetic number, because the mean of its divisors is an integer number (200180224).

Almost surely, 2^400360447 is an apocalyptic number.

400360447 is a deficient number, since it is larger than the sum of its proper divisors (1).

400360447 is an equidigital number, since it uses as much as digits as its factorization.

400360447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 400360447 is about 20009.0091458823. The cubic root of 400360447 is about 737.0275496343.

The spelling of 400360447 in words is "four hundred million, three hundred sixty thousand, four hundred forty-seven".