40643363 has 8 divisors (see below), whose sum is σ = 41259600. Its totient is φ = 40030848.

The previous prime is 40643359. The next prime is 40643371. The reversal of 40643363 is 36334604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40643363 - 2² = 40643359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40643663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27128 + ... + 28586.

It is an arithmetic number, because the mean of its divisors is an integer number (5157450).

Almost surely, 2^40643363 is an apocalyptic number.

40643363 is a deficient number, since it is larger than the sum of its proper divisors (616237).

40643363 is a wasteful number, since it uses less digits than its factorization.

40643363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861.

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 40643363 is about 6375.2147414813. The cubic root of 40643363 is about 343.8190046374.

Adding to 40643363 its reverse (36334604), we get a palindrome (76977967).

The spelling of 40643363 in words is "forty million, six hundred forty-three thousand, three hundred sixty-three".