40040380 has 12 divisors (see below), whose sum is σ = 84084840. Its totient is φ = 16016144.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040380 is 8304004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000990 + ... + 1001029.

It is an arithmetic number, because the mean of its divisors is an integer number (7007070).

Almost surely, 2^40040380 is an apocalyptic number.

It is an amenable number.

40040380 is an abundant number, since it is smaller than the sum of its proper divisors (44044460).

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

40040380 is a wasteful number, since it uses less digits than its factorization.

40040380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002028 (or 2002026 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40040380 is about 6327.7468343795. The cubic root of 40040380 is about 342.1102320134.

Adding to 40040380 its reverse (8304004), we get a palindrome (48344384).

The spelling of 40040380 in words is "forty million, forty thousand, three hundred eighty".