401947267 has 2 divisors, whose sum is σ = 401947268. Its totient is φ = 401947266.

The previous prime is 401947237. The next prime is 401947277. The reversal of 401947267 is 762749104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401947267 is a prime.

It is not a weakly prime, because it can be changed into another prime (401947237) 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, 200973633 + 200973634.

It is an arithmetic number, because the mean of its divisors is an integer number (200973634).

Almost surely, 2^401947267 is an apocalyptic number.

401947267 is a deficient number, since it is larger than the sum of its proper divisors (1).

401947267 is an equidigital number, since it uses as much as digits as its factorization.

401947267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 401947267 is about 20048.6225711394. The cubic root of 401947267 is about 737.9999969399. Note that the first 5 decimals are identical.

The spelling of 401947267 in words is "four hundred one million, nine hundred forty-seven thousand, two hundred sixty-seven".