40221463 has 4 divisors (see below), whose sum is σ = 41608440. Its totient is φ = 38834488.

The previous prime is 40221443. The next prime is 40221481. The reversal of 40221463 is 36412204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40221463 - 2⁵ = 40221431 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 (40221403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693445 + ... + 693502.

It is an arithmetic number, because the mean of its divisors is an integer number (10402110).

Almost surely, 2^40221463 is an apocalyptic number.

40221463 is a deficient number, since it is larger than the sum of its proper divisors (1386977).

40221463 is a wasteful number, since it uses less digits than its factorization.

40221463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386976.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40221463 is about 6342.0393407799. The cubic root of 40221463 is about 342.6251887540.

Adding to 40221463 its reverse (36412204), we get a palindrome (76633667).

The spelling of 40221463 in words is "forty million, two hundred twenty-one thousand, four hundred sixty-three".