40209750 has 256 divisors, whose sum is σ = 136581120. Its totient is φ = 8553600.

The previous prime is 40209733. The next prime is 40209751. The reversal of 40209750 is 5790204.

40209750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40209751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1086732 + ... + 1086768.

It is an arithmetic number, because the mean of its divisors is an integer number (533520).

Almost surely, 2^40209750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40209750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68290560).

40209750 is an abundant number, since it is smaller than the sum of its proper divisors (96371370).

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

40209750 is a wasteful number, since it uses less digits than its factorization.

40209750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 40209750 is about 6341.1158324068. The cubic root of 40209750 is about 342.5919265920.

Adding to 40209750 its reverse (5790204), we get a palindrome (45999954).

The spelling of 40209750 in words is "forty million, two hundred nine thousand, seven hundred fifty".