4000040340 has 24 divisors (see below), whose sum is σ = 11200113120. Its totient is φ = 1066677408.

The previous prime is 4000040323. The next prime is 4000040353. The reversal of 4000040340 is 430400004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33333610 + ... + 33333729.

It is an arithmetic number, because the mean of its divisors is an integer number (466671380).

Almost surely, 2^4000040340 is an apocalyptic number.

It is an amenable number.

4000040340 is an abundant number, since it is smaller than the sum of its proper divisors (7200072780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000040340 is a wasteful number, since it uses less digits than its factorization.

4000040340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66667351 (or 66667349 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4000040340 is about 63245.8721182656. The cubic root of 4000040340 is about 1587.4063882635.

Adding to 4000040340 its reverse (430400004), we get a palindrome (4430440344).

The spelling of 4000040340 in words is "four billion, forty thousand, three hundred forty".