913221463 has 16 divisors (see below), whose sum is σ = 1188066816. Its totient is φ = 680660640.

The previous prime is 913221451. The next prime is 913221499. The reversal of 913221463 is 364122319.

It is a de Polignac number, because none of the positive numbers 2^k-913221463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913221403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256056 + ... + 259597.

It is an arithmetic number, because the mean of its divisors is an integer number (74254176).

Almost surely, 2^913221463 is an apocalyptic number.

913221463 is a deficient number, since it is larger than the sum of its proper divisors (274845353).

913221463 is a wasteful number, since it uses less digits than its factorization.

913221463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515694.

The product of its digits is 7776, while the sum is 31.

The square root of 913221463 is about 30219.5543150457. The cubic root of 913221463 is about 970.1942654806.

The spelling of 913221463 in words is "nine hundred thirteen million, two hundred twenty-one thousand, four hundred sixty-three".