400671263 has 2 divisors, whose sum is σ = 400671264. Its totient is φ = 400671262.

The previous prime is 400671239. The next prime is 400671277. The reversal of 400671263 is 362176004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400671263 - 2¹² = 400667167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400671203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200335631 + 200335632.

It is an arithmetic number, because the mean of its divisors is an integer number (200335632).

Almost surely, 2^400671263 is an apocalyptic number.

400671263 is a deficient number, since it is larger than the sum of its proper divisors (1).

400671263 is an equidigital number, since it uses as much as digits as its factorization.

400671263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 400671263 is about 20016.7745403699. The cubic root of 400671263 is about 737.2182283929.

The spelling of 400671263 in words is "four hundred million, six hundred seventy-one thousand, two hundred sixty-three".