401448997 has 2 divisors, whose sum is σ = 401448998. Its totient is φ = 401448996.

The previous prime is 401448941. The next prime is 401449003. The reversal of 401448997 is 799844104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401040676 + 408321 = 20026^2 + 639^2 .

It is a cyclic number.

It is not a de Polignac number, because 401448997 - 2²⁷ = 267231269 is a prime.

It is a super-3 number, since 3×401448997³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401448937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200724498 + 200724499.

It is an arithmetic number, because the mean of its divisors is an integer number (200724499).

Almost surely, 2^401448997 is an apocalyptic number.

It is an amenable number.

401448997 is a deficient number, since it is larger than the sum of its proper divisors (1).

401448997 is an equidigital number, since it uses as much as digits as its factorization.

401448997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 401448997 is about 20036.1921781560. The cubic root of 401448997 is about 737.6949193492.

It can be divided in two parts, 40144 and 8997, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 401448997 in words is "four hundred one million, four hundred forty-eight thousand, nine hundred ninety-seven".