40363481 has 4 divisors (see below), whose sum is σ = 40849872. Its totient is φ = 39877092.

The previous prime is 40363471. The next prime is 40363483. The reversal of 40363481 is 18436304.

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-40363481 is a prime.

It is a super-2 number, since 2×40363481² = 3258421196874722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40363483) 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, 243071 + ... + 243236.

It is an arithmetic number, because the mean of its divisors is an integer number (10212468).

Almost surely, 2^40363481 is an apocalyptic number.

It is an amenable number.

40363481 is a deficient number, since it is larger than the sum of its proper divisors (486391).

40363481 is an equidigital number, since it uses as much as digits as its factorization.

40363481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486390.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 40363481 is about 6353.2260309232. The cubic root of 40363481 is about 343.0279735903.

Adding to 40363481 its reverse (18436304), we get a palindrome (58799785).

The spelling of 40363481 in words is "forty million, three hundred sixty-three thousand, four hundred eighty-one".