463640441 has 4 divisors (see below), whose sum is σ = 505789584. Its totient is φ = 421491300.

The previous prime is 463640393. The next prime is 463640453. The reversal of 463640441 is 144046364.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-463640441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 463640398 and 463640407.

It is not an unprimeable number, because it can be changed into a prime (463640461) 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 in 3 ways as a sum of consecutive naturals, for example, 21074555 + ... + 21074576.

It is an arithmetic number, because the mean of its divisors is an integer number (126447396).

Almost surely, 2^463640441 is an apocalyptic number.

It is an amenable number.

463640441 is a deficient number, since it is larger than the sum of its proper divisors (42149143).

463640441 is a wasteful number, since it uses less digits than its factorization.

463640441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42149142.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 463640441 is about 21532.3115572853. The cubic root of 463640441 is about 773.9753039591.

The spelling of 463640441 in words is "four hundred sixty-three million, six hundred forty thousand, four hundred forty-one".