40663395 has 24 divisors (see below), whose sum is σ = 70732896. Its totient is φ = 21610368.

The previous prime is 40663391. The next prime is 40663411. The reversal of 40663395 is 59336604.

It is not a de Polignac number, because 40663395 - 2² = 40663391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40663391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12642 + ... + 15528.

It is an arithmetic number, because the mean of its divisors is an integer number (2947204).

Almost surely, 2^40663395 is an apocalyptic number.

40663395 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40663395 is a deficient number, since it is larger than the sum of its proper divisors (30069501).

40663395 is a wasteful number, since it uses less digits than its factorization.

40663395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211 (or 3208 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 40663395 is about 6376.7856322759. The cubic root of 40663395 is about 343.8754816820.

Adding to 40663395 its reverse (59336604), we get a palindrome (99999999).

The spelling of 40663395 in words is "forty million, six hundred sixty-three thousand, three hundred ninety-five".