40354663 has 4 divisors (see below), whose sum is σ = 40370328. Its totient is φ = 40339000.

The previous prime is 40354637. The next prime is 40354667. The reversal of 40354663 is 36645304.

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 40354663 - 2¹⁷ = 40223591 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 (40354667) 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, 2956 + ... + 9457.

It is an arithmetic number, because the mean of its divisors is an integer number (10092582).

Almost surely, 2^40354663 is an apocalyptic number.

40354663 is a deficient number, since it is larger than the sum of its proper divisors (15665).

40354663 is a wasteful number, since it uses less digits than its factorization.

40354663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15664.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 40354663 is about 6352.5320148741. The cubic root of 40354663 is about 343.0029919245.

Adding to 40354663 its reverse (36645304), we get a palindrome (76999967).

The spelling of 40354663 in words is "forty million, three hundred fifty-four thousand, six hundred sixty-three".