447400631 has 2 divisors, whose sum is σ = 447400632. Its totient is φ = 447400630.

The previous prime is 447400589. The next prime is 447400691. The reversal of 447400631 is 136004744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447400631 - 2¹⁰ = 447399607 is a prime.

It is a super-2 number, since 2×447400631² = 400334649238396322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 447400594 and 447400603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447400691) 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, 223700315 + 223700316.

It is an arithmetic number, because the mean of its divisors is an integer number (223700316).

Almost surely, 2^447400631 is an apocalyptic number.

447400631 is a deficient number, since it is larger than the sum of its proper divisors (1).

447400631 is an equidigital number, since it uses as much as digits as its factorization.

447400631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 447400631 is about 21151.8469879110. The cubic root of 447400631 is about 764.8310852085.

The spelling of 447400631 in words is "four hundred forty-seven million, four hundred thousand, six hundred thirty-one".