40040334 has 72 divisors (see below), whose sum is σ = 95064840. Its totient is φ = 12141792.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040334 is 43304004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 755452 + ... + 755504.

It is an arithmetic number, because the mean of its divisors is an integer number (1320345).

Almost surely, 2^40040334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40040334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47532420).

40040334 is an abundant number, since it is smaller than the sum of its proper divisors (55024506).

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

40040334 is a wasteful number, since it uses less digits than its factorization.

40040334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40040334 is about 6327.7431995934. The cubic root of 40040334 is about 342.1101010033.

Adding to 40040334 its reverse (43304004), we get a palindrome (83344338).

The spelling of 40040334 in words is "forty million, forty thousand, three hundred thirty-four".