40468643 has 4 divisors (see below), whose sum is σ = 40481448. Its totient is φ = 40455840.

The previous prime is 40468621. The next prime is 40468657. The reversal of 40468643 is 34686404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40468643 - 2⁸ = 40468387 is a prime.

It is a super-2 number, since 2×40468643² = 3275422132522898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40468663) 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, 2123 + ... + 9243.

It is an arithmetic number, because the mean of its divisors is an integer number (10120362).

Almost surely, 2^40468643 is an apocalyptic number.

40468643 is a deficient number, since it is larger than the sum of its proper divisors (12805).

40468643 is an equidigital number, since it uses as much as digits as its factorization.

40468643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 40468643 is about 6361.4969150350. The cubic root of 40468643 is about 343.3256207356.

The spelling of 40468643 in words is "forty million, four hundred sixty-eight thousand, six hundred forty-three".